Formatting: Format all python code with black.

This CL is probably not what you're looking for, it's only
automated formatting. Ignore it with
`git blame --ignore-rev <revision>` for this commit.

BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/api/controller/packages.py b/api/controller/packages.py
index 48f3084..c880123 100644
--- a/api/controller/packages.py
+++ b/api/controller/packages.py
@@ -26,382 +26,416 @@
     binhost_pb2.OVERLAYTYPE_BOTH: constants.BOTH_OVERLAYS,
 }
 
+
 def _UprevResponse(_input_proto, output_proto, _config):
-  """Add fake paths to a successful uprev response."""
-  output_proto.modified_ebuilds.add().path = '/fake/path1'
-  output_proto.modified_ebuilds.add().path = '/fake/path2'
+    """Add fake paths to a successful uprev response."""
+    output_proto.modified_ebuilds.add().path = "/fake/path1"
+    output_proto.modified_ebuilds.add().path = "/fake/path2"
+
 
 @faux.success(_UprevResponse)
 @faux.empty_error
-@validate.require('overlay_type')
-@validate.is_in('overlay_type', _OVERLAY_TYPE_TO_NAME)
+@validate.require("overlay_type")
+@validate.is_in("overlay_type", _OVERLAY_TYPE_TO_NAME)
 @validate.validation_complete
 def Uprev(input_proto, output_proto, _config):
-  """Uprev all cros workon ebuilds that have changes."""
-  build_targets = controller_util.ParseBuildTargets(input_proto.build_targets)
-  overlay_type = _OVERLAY_TYPE_TO_NAME[input_proto.overlay_type]
-  chroot = controller_util.ParseChroot(input_proto.chroot)
-  output_dir = input_proto.output_dir or None
+    """Uprev all cros workon ebuilds that have changes."""
+    build_targets = controller_util.ParseBuildTargets(input_proto.build_targets)
+    overlay_type = _OVERLAY_TYPE_TO_NAME[input_proto.overlay_type]
+    chroot = controller_util.ParseChroot(input_proto.chroot)
+    output_dir = input_proto.output_dir or None
 
-  try:
-    modified_ebuilds, revved_packages = (
-        packages.uprev_build_targets(build_targets, overlay_type, chroot,
-                                     output_dir))
-  except packages.Error as e:
-    # Handle module errors nicely, let everything else bubble up.
-    cros_build_lib.Die(e)
+    try:
+        modified_ebuilds, revved_packages = packages.uprev_build_targets(
+            build_targets, overlay_type, chroot, output_dir
+        )
+    except packages.Error as e:
+        # Handle module errors nicely, let everything else bubble up.
+        cros_build_lib.Die(e)
 
-  for path in modified_ebuilds:
-    output_proto.modified_ebuilds.add().path = path
+    for path in modified_ebuilds:
+        output_proto.modified_ebuilds.add().path = path
 
-  for package in revved_packages:
-    pkg_info = package_info.parse(package)
-    pkg_proto = output_proto.packages.add()
-    controller_util.serialize_package_info(pkg_info, pkg_proto)
+    for package in revved_packages:
+        pkg_info = package_info.parse(package)
+        pkg_proto = output_proto.packages.add()
+        controller_util.serialize_package_info(pkg_info, pkg_proto)
+
 
 def _UprevVersionedPackageResponse(_input_proto, output_proto, _config):
-  """Add fake paths to a successful uprev versioned package response."""
-  uprev_response = output_proto.responses.add()
-  uprev_response.modified_ebuilds.add().path = '/uprev/response/path'
+    """Add fake paths to a successful uprev versioned package response."""
+    uprev_response = output_proto.responses.add()
+    uprev_response.modified_ebuilds.add().path = "/uprev/response/path"
 
 
 @faux.success(_UprevVersionedPackageResponse)
 @faux.empty_error
-@validate.require('versions')
-@validate.require('package_info.package_name', 'package_info.category')
+@validate.require("versions")
+@validate.require("package_info.package_name", "package_info.category")
 @validate.validation_complete
 def UprevVersionedPackage(input_proto, output_proto, _config):
-  """Uprev a versioned package.
+    """Uprev a versioned package.
 
-  See go/pupr-generator for details about this endpoint.
-  """
-  chroot = controller_util.ParseChroot(input_proto.chroot)
-  build_targets = controller_util.ParseBuildTargets(input_proto.build_targets)
-  package = controller_util.PackageInfoToCPV(input_proto.package_info)
-  refs = []
-  for ref in input_proto.versions:
-    refs.append(GitRef(path=ref.repository, ref=ref.ref, revision=ref.revision))
+    See go/pupr-generator for details about this endpoint.
+    """
+    chroot = controller_util.ParseChroot(input_proto.chroot)
+    build_targets = controller_util.ParseBuildTargets(input_proto.build_targets)
+    package = controller_util.PackageInfoToCPV(input_proto.package_info)
+    refs = []
+    for ref in input_proto.versions:
+        refs.append(
+            GitRef(path=ref.repository, ref=ref.ref, revision=ref.revision)
+        )
 
-  try:
-    result = packages.uprev_versioned_package(package, build_targets, refs,
-                                              chroot)
-  except packages.Error as e:
-    # Handle module errors nicely, let everything else bubble up.
-    cros_build_lib.Die(e)
+    try:
+        result = packages.uprev_versioned_package(
+            package, build_targets, refs, chroot
+        )
+    except packages.Error as e:
+        # Handle module errors nicely, let everything else bubble up.
+        cros_build_lib.Die(e)
 
-  for modified in result.modified:
-    uprev_response = output_proto.responses.add()
-    uprev_response.version = modified.new_version
-    for path in modified.files:
-      uprev_response.modified_ebuilds.add().path = path
+    for modified in result.modified:
+        uprev_response = output_proto.responses.add()
+        uprev_response.version = modified.new_version
+        for path in modified.files:
+            uprev_response.modified_ebuilds.add().path = path
 
 
 @faux.success(_UprevVersionedPackageResponse)
 @faux.empty_error
 @validate.validation_complete
 def RevBumpChrome(_input_proto, output_proto, _config):
-  result = packages.revbump_chrome()
+    result = packages.revbump_chrome()
 
-  for modified in result.modified:
-    uprev_response = output_proto.responses.add()
-    uprev_response.version = modified.new_version
-    for path in modified.files:
-      uprev_response.modified_ebuilds.add().path = path
+    for modified in result.modified:
+        uprev_response = output_proto.responses.add()
+        uprev_response.version = modified.new_version
+        for path in modified.files:
+            uprev_response.modified_ebuilds.add().path = path
 
 
 def _GetBestVisibleResponse(_input_proto, output_proto, _config):
-  """Add fake paths to a successful GetBestVisible response."""
-  pkg_info_msg = common_pb2.PackageInfo(
-      category='category',
-      package_name='name',
-      version='1.01',
-  )
-  output_proto.package_info.CopyFrom(pkg_info_msg)
+    """Add fake paths to a successful GetBestVisible response."""
+    pkg_info_msg = common_pb2.PackageInfo(
+        category="category",
+        package_name="name",
+        version="1.01",
+    )
+    output_proto.package_info.CopyFrom(pkg_info_msg)
 
 
 @faux.success(_GetBestVisibleResponse)
 @faux.empty_error
-@validate.require('atom')
+@validate.require("atom")
 @validate.validation_complete
 def GetBestVisible(input_proto, output_proto, _config):
-  """Returns the best visible PackageInfo for the indicated atom."""
-  build_target = None
-  if input_proto.build_target.name:
-    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    """Returns the best visible PackageInfo for the indicated atom."""
+    build_target = None
+    if input_proto.build_target.name:
+        build_target = controller_util.ParseBuildTarget(
+            input_proto.build_target
+        )
 
-  best = packages.get_best_visible(input_proto.atom, build_target=build_target)
-  controller_util.serialize_package_info(best, output_proto.package_info)
+    best = packages.get_best_visible(
+        input_proto.atom, build_target=build_target
+    )
+    controller_util.serialize_package_info(best, output_proto.package_info)
 
 
 def _ChromeVersionResponse(_input_proto, output_proto, _config):
-  """Add a fake chrome version to a successful response."""
-  output_proto.version = '78.0.3900.0'
+    """Add a fake chrome version to a successful response."""
+    output_proto.version = "78.0.3900.0"
 
 
 @faux.success(_ChromeVersionResponse)
 @faux.empty_error
-@validate.require('build_target.name')
+@validate.require("build_target.name")
 @validate.validation_complete
 def GetChromeVersion(input_proto, output_proto, _config):
-  """Returns the chrome version."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  chrome_version = packages.determine_chrome_version(build_target)
-  if chrome_version:
-    output_proto.version = chrome_version
+    """Returns the chrome version."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    chrome_version = packages.determine_chrome_version(build_target)
+    if chrome_version:
+        output_proto.version = chrome_version
 
 
 def _GetTargetVersionsResponse(_input_proto, output_proto, _config):
-  """Add fake target version fields to a successful response."""
-  output_proto.android_version = '5812377'
-  output_proto.android_branch_version = 'git_nyc-mr1-arc'
-  output_proto.android_target_version = 'cheets'
-  output_proto.chrome_version = '78.0.3900.0'
-  output_proto.platform_version = '12438.0.0'
-  output_proto.milestone_version = '78'
-  output_proto.full_version = 'R78-12438.0.0'
+    """Add fake target version fields to a successful response."""
+    output_proto.android_version = "5812377"
+    output_proto.android_branch_version = "git_nyc-mr1-arc"
+    output_proto.android_target_version = "cheets"
+    output_proto.chrome_version = "78.0.3900.0"
+    output_proto.platform_version = "12438.0.0"
+    output_proto.milestone_version = "78"
+    output_proto.full_version = "R78-12438.0.0"
 
 
 @faux.success(_GetTargetVersionsResponse)
 @faux.empty_error
-@validate.require('build_target.name')
-@validate.require_each('packages', ['category', 'package_name'])
+@validate.require("build_target.name")
+@validate.require_each("packages", ["category", "package_name"])
 @validate.validation_complete
 def GetTargetVersions(input_proto, output_proto, _config):
-  """Returns the target versions."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  package_list = [
-      controller_util.PackageInfoToCPV(x) for x in input_proto.packages or []
-  ]
-  target_versions = packages.get_target_versions(build_target, package_list)
+    """Returns the target versions."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    package_list = [
+        controller_util.PackageInfoToCPV(x) for x in input_proto.packages or []
+    ]
+    target_versions = packages.get_target_versions(build_target, package_list)
 
-  output_proto.android_version = target_versions.android_version or ''
-  output_proto.android_branch_version = target_versions.android_branch or ''
-  output_proto.android_target_version = target_versions.android_target or ''
-  output_proto.chrome_version = target_versions.chrome_version or ''
-  output_proto.platform_version = target_versions.platform_version or ''
-  output_proto.milestone_version = target_versions.milestone_version or ''
-  output_proto.full_version = target_versions.full_version or ''
+    output_proto.android_version = target_versions.android_version or ""
+    output_proto.android_branch_version = target_versions.android_branch or ""
+    output_proto.android_target_version = target_versions.android_target or ""
+    output_proto.chrome_version = target_versions.chrome_version or ""
+    output_proto.platform_version = target_versions.platform_version or ""
+    output_proto.milestone_version = target_versions.milestone_version or ""
+    output_proto.full_version = target_versions.full_version or ""
 
 
 def _GetBuilderMetadataResponse(input_proto, output_proto, _config):
-  """Add fake metadata fields to a successful response."""
-  # Populate only a few fields to validate faux testing.
-  build_target_metadata = output_proto.build_target_metadata.add()
-  build_target_metadata.build_target = input_proto.build_target.name
-  build_target_metadata.android_container_branch = 'git_pi-arc'
-  model_metadata = output_proto.model_metadata.add()
-  model_metadata.model_name = 'astronaut'
-  model_metadata.ec_firmware_version = 'coral_v1.1.1234-56789f'
+    """Add fake metadata fields to a successful response."""
+    # Populate only a few fields to validate faux testing.
+    build_target_metadata = output_proto.build_target_metadata.add()
+    build_target_metadata.build_target = input_proto.build_target.name
+    build_target_metadata.android_container_branch = "git_pi-arc"
+    model_metadata = output_proto.model_metadata.add()
+    model_metadata.model_name = "astronaut"
+    model_metadata.ec_firmware_version = "coral_v1.1.1234-56789f"
 
 
 @faux.success(_GetBuilderMetadataResponse)
 @faux.empty_error
-@validate.require('build_target.name')
+@validate.require("build_target.name")
 @validate.validation_complete
 def GetBuilderMetadata(input_proto, output_proto, _config):
-  """Returns the target builder metadata."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  build_target_metadata = output_proto.build_target_metadata.add()
-  build_target_metadata.build_target = build_target.name
-  # Android version.
-  android_version = packages.determine_android_version(build_target.name)
-  logging.info('Found android version: %s', android_version)
-  if android_version:
-    build_target_metadata.android_container_version = android_version
-  # Android branch version.
-  android_branch_version = packages.determine_android_branch(build_target.name)
-  logging.info('Found android branch version: %s', android_branch_version)
-  if android_branch_version:
-    build_target_metadata.android_container_branch = android_branch_version
-  # Android target version.
-  android_target_version = packages.determine_android_target(build_target.name)
-  logging.info('Found android target version: %s', android_target_version)
-  if android_target_version:
-    build_target_metadata.android_container_target = android_target_version
+    """Returns the target builder metadata."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    build_target_metadata = output_proto.build_target_metadata.add()
+    build_target_metadata.build_target = build_target.name
+    # Android version.
+    android_version = packages.determine_android_version(build_target.name)
+    logging.info("Found android version: %s", android_version)
+    if android_version:
+        build_target_metadata.android_container_version = android_version
+    # Android branch version.
+    android_branch_version = packages.determine_android_branch(
+        build_target.name
+    )
+    logging.info("Found android branch version: %s", android_branch_version)
+    if android_branch_version:
+        build_target_metadata.android_container_branch = android_branch_version
+    # Android target version.
+    android_target_version = packages.determine_android_target(
+        build_target.name
+    )
+    logging.info("Found android target version: %s", android_target_version)
+    if android_target_version:
+        build_target_metadata.android_container_target = android_target_version
 
-  build_target_metadata.arc_use_set = 'arc' in portage_util.GetBoardUseFlags(
-      build_target.name)
+    build_target_metadata.arc_use_set = "arc" in portage_util.GetBoardUseFlags(
+        build_target.name
+    )
 
-  fw_versions = packages.determine_firmware_versions(build_target)
-  build_target_metadata.main_firmware_version = (
-      fw_versions.main_fw_version or '')
-  build_target_metadata.ec_firmware_version = fw_versions.ec_fw_version or ''
+    fw_versions = packages.determine_firmware_versions(build_target)
+    build_target_metadata.main_firmware_version = (
+        fw_versions.main_fw_version or ""
+    )
+    build_target_metadata.ec_firmware_version = fw_versions.ec_fw_version or ""
 
-  build_target_metadata.kernel_version = packages.determine_kernel_version(
-      build_target) or ''
-  fingerprints = packages.find_fingerprints(build_target)
-  build_target_metadata.fingerprints.extend(fingerprints)
+    build_target_metadata.kernel_version = (
+        packages.determine_kernel_version(build_target) or ""
+    )
+    fingerprints = packages.find_fingerprints(build_target)
+    build_target_metadata.fingerprints.extend(fingerprints)
 
-  models = packages.get_models(build_target)
-  if models:
-    all_fw_versions = packages.get_all_firmware_versions(build_target)
-    for model in models:
-      if model in all_fw_versions:
-        fw_versions = all_fw_versions[model]
-        ec = fw_versions.ec_rw or fw_versions.ec
-        main_ro = fw_versions.main
-        main_rw = fw_versions.main_rw or main_ro
-        # Get the firmware key-id for the current board and model.
-        key_id = packages.get_key_id(build_target, model)
-        model_metadata = output_proto.model_metadata.add()
-        model_metadata.model_name = model
-        model_metadata.ec_firmware_version = ec or ''
-        model_metadata.firmware_key_id = key_id
-        model_metadata.main_readonly_firmware_version = main_ro or ''
-        model_metadata.main_readwrite_firmware_version = main_rw or ''
+    models = packages.get_models(build_target)
+    if models:
+        all_fw_versions = packages.get_all_firmware_versions(build_target)
+        for model in models:
+            if model in all_fw_versions:
+                fw_versions = all_fw_versions[model]
+                ec = fw_versions.ec_rw or fw_versions.ec
+                main_ro = fw_versions.main
+                main_rw = fw_versions.main_rw or main_ro
+                # Get the firmware key-id for the current board and model.
+                key_id = packages.get_key_id(build_target, model)
+                model_metadata = output_proto.model_metadata.add()
+                model_metadata.model_name = model
+                model_metadata.ec_firmware_version = ec or ""
+                model_metadata.firmware_key_id = key_id
+                model_metadata.main_readonly_firmware_version = main_ro or ""
+                model_metadata.main_readwrite_firmware_version = main_rw or ""
 
 
 def _HasPrebuiltSuccess(_input_proto, output_proto, _config):
-  """The mock success case for HasChromePrebuilt."""
-  output_proto.has_prebuilt = True
+    """The mock success case for HasChromePrebuilt."""
+    output_proto.has_prebuilt = True
 
 
 @faux.success(_HasPrebuiltSuccess)
 @faux.empty_error
-@validate.require('build_target.name')
+@validate.require("build_target.name")
 @validate.validation_complete
 def HasChromePrebuilt(input_proto, output_proto, _config):
-  """Checks if the most recent version of Chrome has a prebuilt."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  useflags = 'chrome_internal' if input_proto.chrome else None
-  exists = packages.has_prebuilt(constants.CHROME_CP, build_target=build_target,
-                                 useflags=useflags)
+    """Checks if the most recent version of Chrome has a prebuilt."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    useflags = "chrome_internal" if input_proto.chrome else None
+    exists = packages.has_prebuilt(
+        constants.CHROME_CP, build_target=build_target, useflags=useflags
+    )
 
-  output_proto.has_prebuilt = exists
+    output_proto.has_prebuilt = exists
 
 
 @faux.success(_HasPrebuiltSuccess)
 @faux.empty_error
-@validate.require('build_target.name', 'package_info.category',
-                  'package_info.package_name')
+@validate.require(
+    "build_target.name", "package_info.category", "package_info.package_name"
+)
 @validate.validation_complete
 def HasPrebuilt(input_proto, output_proto, _config):
-  """Checks if the most recent version of Chrome has a prebuilt."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  package = controller_util.PackageInfoToCPV(input_proto.package_info).cp
-  useflags = 'chrome_internal' if input_proto.chrome else None
-  exists = packages.has_prebuilt(
-      package, build_target=build_target, useflags=useflags)
+    """Checks if the most recent version of Chrome has a prebuilt."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    package = controller_util.PackageInfoToCPV(input_proto.package_info).cp
+    useflags = "chrome_internal" if input_proto.chrome else None
+    exists = packages.has_prebuilt(
+        package, build_target=build_target, useflags=useflags
+    )
 
-  output_proto.has_prebuilt = exists
+    output_proto.has_prebuilt = exists
 
 
 def _BuildsChromeSuccess(_input_proto, output_proto, _config):
-  """Mock success case for BuildsChrome."""
-  output_proto.builds_chrome = True
+    """Mock success case for BuildsChrome."""
+    output_proto.builds_chrome = True
 
 
 @faux.success(_BuildsChromeSuccess)
 @faux.empty_error
-@validate.require('build_target.name')
-@validate.require_each('packages', ['category', 'package_name'])
+@validate.require("build_target.name")
+@validate.require_each("packages", ["category", "package_name"])
 @validate.validation_complete
 def BuildsChrome(input_proto, output_proto, _config):
-  """Check if the board builds chrome."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  cpvs = [controller_util.PackageInfoToCPV(pi) for pi in input_proto.packages]
-  builds_chrome = packages.builds(constants.CHROME_CP, build_target, cpvs)
-  output_proto.builds_chrome = builds_chrome
+    """Check if the board builds chrome."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    cpvs = [controller_util.PackageInfoToCPV(pi) for pi in input_proto.packages]
+    builds_chrome = packages.builds(constants.CHROME_CP, build_target, cpvs)
+    output_proto.builds_chrome = builds_chrome
 
 
 def _NeedsChromeSourceSuccess(_input_proto, output_proto, _config):
-  """Mock success case for NeedsChromeSource."""
-  output_proto.needs_chrome_source = True
-  output_proto.builds_chrome = True
+    """Mock success case for NeedsChromeSource."""
+    output_proto.needs_chrome_source = True
+    output_proto.builds_chrome = True
 
-  output_proto.reasons.append(
-      packages_pb2.NeedsChromeSourceResponse.NO_PREBUILT)
-  pkg_info_msg = output_proto.packages.add()
-  pkg_info_msg.category = constants.CHROME_CN
-  pkg_info_msg.package_name = constants.CHROME_PN
-
-  output_proto.reasons.append(
-      packages_pb2.NeedsChromeSourceResponse.FOLLOWER_LACKS_PREBUILT)
-  for pkg in constants.OTHER_CHROME_PACKAGES:
+    output_proto.reasons.append(
+        packages_pb2.NeedsChromeSourceResponse.NO_PREBUILT
+    )
     pkg_info_msg = output_proto.packages.add()
-    pkg_info = package_info.parse(pkg)
-    controller_util.serialize_package_info(pkg_info, pkg_info_msg)
+    pkg_info_msg.category = constants.CHROME_CN
+    pkg_info_msg.package_name = constants.CHROME_PN
+
+    output_proto.reasons.append(
+        packages_pb2.NeedsChromeSourceResponse.FOLLOWER_LACKS_PREBUILT
+    )
+    for pkg in constants.OTHER_CHROME_PACKAGES:
+        pkg_info_msg = output_proto.packages.add()
+        pkg_info = package_info.parse(pkg)
+        controller_util.serialize_package_info(pkg_info, pkg_info_msg)
 
 
 @faux.success(_NeedsChromeSourceSuccess)
 @faux.empty_error
-@validate.require('install_request.sysroot.build_target.name')
-@validate.exists('install_request.sysroot.path')
+@validate.require("install_request.sysroot.build_target.name")
+@validate.exists("install_request.sysroot.path")
 @validate.validation_complete
 def NeedsChromeSource(input_proto, output_proto, _config):
-  """Check if the build will need the chrome source."""
-  # Input parsing.
-  build_target = controller_util.ParseBuildTarget(
-      input_proto.install_request.sysroot.build_target)
-  compile_source = (input_proto.install_request.flags.compile_source or
-                    input_proto.install_request.flags.toolchain_changed)
-  pkgs = [controller_util.deserialize_package_info(pi) for pi in
-          input_proto.install_request.packages]
-  use_flags = [f.flag for f in input_proto.install_request.use_flags]
+    """Check if the build will need the chrome source."""
+    # Input parsing.
+    build_target = controller_util.ParseBuildTarget(
+        input_proto.install_request.sysroot.build_target
+    )
+    compile_source = (
+        input_proto.install_request.flags.compile_source
+        or input_proto.install_request.flags.toolchain_changed
+    )
+    pkgs = [
+        controller_util.deserialize_package_info(pi)
+        for pi in input_proto.install_request.packages
+    ]
+    use_flags = [f.flag for f in input_proto.install_request.use_flags]
 
-  result = packages.needs_chrome_source(
-      build_target,
-      compile_source=compile_source,
-      packages=pkgs,
-      useflags=use_flags)
+    result = packages.needs_chrome_source(
+        build_target,
+        compile_source=compile_source,
+        packages=pkgs,
+        useflags=use_flags,
+    )
 
-  # Record everything in the response.
-  output_proto.needs_chrome_source = result.needs_chrome_source
-  output_proto.builds_chrome = result.builds_chrome
+    # Record everything in the response.
+    output_proto.needs_chrome_source = result.needs_chrome_source
+    output_proto.builds_chrome = result.builds_chrome
 
-  # Compile source reason.
-  if compile_source:
-    output_proto.reasons.append(
-        packages_pb2.NeedsChromeSourceResponse.COMPILE_SOURCE)
+    # Compile source reason.
+    if compile_source:
+        output_proto.reasons.append(
+            packages_pb2.NeedsChromeSourceResponse.COMPILE_SOURCE
+        )
 
-  # Local uprev reason.
-  if result.local_uprev:
-    output_proto.reasons.append(
-        packages_pb2.NeedsChromeSourceResponse.LOCAL_UPREV)
+    # Local uprev reason.
+    if result.local_uprev:
+        output_proto.reasons.append(
+            packages_pb2.NeedsChromeSourceResponse.LOCAL_UPREV
+        )
 
-  # No chrome prebuilt reason.
-  if result.missing_chrome_prebuilt:
-    output_proto.reasons.append(
-        packages_pb2.NeedsChromeSourceResponse.NO_PREBUILT)
+    # No chrome prebuilt reason.
+    if result.missing_chrome_prebuilt:
+        output_proto.reasons.append(
+            packages_pb2.NeedsChromeSourceResponse.NO_PREBUILT
+        )
 
-  # Follower package(s) lack prebuilt reason.
-  if result.missing_follower_prebuilt:
-    output_proto.reasons.append(
-        packages_pb2.NeedsChromeSourceResponse.FOLLOWER_LACKS_PREBUILT)
+    # Follower package(s) lack prebuilt reason.
+    if result.missing_follower_prebuilt:
+        output_proto.reasons.append(
+            packages_pb2.NeedsChromeSourceResponse.FOLLOWER_LACKS_PREBUILT
+        )
 
-  for pkg in result.packages:
-    pkg_info = output_proto.packages.add()
-    controller_util.serialize_package_info(pkg, pkg_info)
+    for pkg in result.packages:
+        pkg_info = output_proto.packages.add()
+        controller_util.serialize_package_info(pkg, pkg_info)
 
 
 def _GetAndroidMetadataResponse(_input_proto, output_proto, _config):
-  """Mock Android metadata on successful run."""
-  output_proto.android_package = 'android-vm-rvc'
-  output_proto.android_branch = 'git_rvc-arc'
-  output_proto.android_version = '7123456'
+    """Mock Android metadata on successful run."""
+    output_proto.android_package = "android-vm-rvc"
+    output_proto.android_branch = "git_rvc-arc"
+    output_proto.android_version = "7123456"
 
 
 @faux.success(_GetAndroidMetadataResponse)
 @faux.empty_error
-@validate.require('build_target.name')
+@validate.require("build_target.name")
 @validate.validation_complete
 def GetAndroidMetadata(input_proto, output_proto, _config):
-  """Returns Android-related metadata."""
-  build_target = controller_util.ParseBuildTarget(input_proto.build_target)
-  # This returns a full CPVR string, e.g.
-  # 'chromeos-base/android-vm-rvc-7336577-r1'
-  android_full_package = packages.determine_android_package(build_target.name)
-  if android_full_package:
-    logging.info('Found Android package: %s', android_full_package)
-    info = package_info.parse(android_full_package)
-    output_proto.android_package = info.package
+    """Returns Android-related metadata."""
+    build_target = controller_util.ParseBuildTarget(input_proto.build_target)
+    # This returns a full CPVR string, e.g.
+    # 'chromeos-base/android-vm-rvc-7336577-r1'
+    android_full_package = packages.determine_android_package(build_target.name)
+    if android_full_package:
+        logging.info("Found Android package: %s", android_full_package)
+        info = package_info.parse(android_full_package)
+        output_proto.android_package = info.package
 
-    android_branch = packages.determine_android_branch(
-        build_target.name, package=android_full_package)
-    logging.info('Found Android branch: %s', android_branch)
-    output_proto.android_branch = android_branch
+        android_branch = packages.determine_android_branch(
+            build_target.name, package=android_full_package
+        )
+        logging.info("Found Android branch: %s", android_branch)
+        output_proto.android_branch = android_branch
 
-    android_version = packages.determine_android_version(
-        build_target.name, package=android_full_package)
-    logging.info('Found Android version: %s', android_version)
-    output_proto.android_version = android_version
+        android_version = packages.determine_android_version(
+            build_target.name, package=android_full_package
+        )
+        logging.info("Found Android version: %s", android_version)
+        output_proto.android_version = android_version