Reland of move all reference to carbon api (patchset #1 id:1 of https://codereview.webrtc.org/2316563002/ )

Reason for revert:
Chromium build issues have been resolved.

Original issue's description:
> Revert of Remove all reference to carbon api (patchset #2 id:20001 of https://codereview.webrtc.org/2299633002/ )
>
> Reason for revert:
> Breaks chromium build
>
> Original issue's description:
> > Remove all reference to carbon api
> >
> > BUG=webrtc:6282
> >
> > Committed: https://crrev.com/dbd8b6bec4143c940b2f2ca8cd85c25d17327964
> > Cr-Commit-Position: refs/heads/master@{#14080}
>
> TBR=magjed@webrtc.org,mflodman@webrtc.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:6282
>
> Committed: https://crrev.com/b096aa7fd375a980daab3a986596548ca5de2a1c
> Cr-Commit-Position: refs/heads/master@{#14081}

TBR=magjed@webrtc.org,mflodman@webrtc.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=webrtc:6282

Review-Url: https://codereview.webrtc.org/2321493002
Cr-Commit-Position: refs/heads/master@{#14125}
diff --git a/webrtc/base/BUILD.gn b/webrtc/base/BUILD.gn
index a415efb..ec92cce 100644
--- a/webrtc/base/BUILD.gn
+++ b/webrtc/base/BUILD.gn
@@ -63,9 +63,6 @@
       "Security.framework",
       "SystemConfiguration.framework",
     ]
-    if (current_cpu == "x86") {
-      libs += [ "Carbon.framework" ]
-    }
   }
 }
 
@@ -289,6 +286,7 @@
   defines = [ "LOGGING=1" ]
 
   sources = [
+    "applefilesystem.mm",
     "arraysize.h",
     "asyncfile.cc",
     "asyncfile.h",
@@ -337,7 +335,6 @@
     "httpcommon.h",
     "httprequest.cc",
     "httprequest.h",
-    "iosfilesystem.mm",
     "ipaddress.cc",
     "ipaddress.h",
     "linked_ptr.h",
@@ -667,10 +664,6 @@
     }
   }
 
-  if (is_ios || (is_mac && current_cpu != "x86")) {
-    defines += [ "CARBON_DEPRECATED=YES" ]
-  }
-
   if (is_linux || is_android) {
     sources += [
       "linux.cc",
diff --git a/webrtc/base/iosfilesystem.mm b/webrtc/base/applefilesystem.mm
similarity index 84%
rename from webrtc/base/iosfilesystem.mm
rename to webrtc/base/applefilesystem.mm
index eb4bbec..9f015ed 100644
--- a/webrtc/base/iosfilesystem.mm
+++ b/webrtc/base/applefilesystem.mm
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-// This file only exists because various iOS system APIs are only
-// available from Objective-C.  See unixfilesystem.cc for the only use
+// This file only exists because various iOS and macOS system APIs are only
+// available from Objective-C. See unixfilesystem.cc for the only use
 // (enforced by a lack of a header file).
 
 #import <Foundation/NSPathUtilities.h>
@@ -33,7 +33,7 @@
 }
 
 // Return a (leaked) copy of a directory name suitable for application data.
-char* IOSDataDirectory() {
+char* AppleDataDirectory() {
   NSArray* paths = NSSearchPathForDirectoriesInDomains(
       NSApplicationSupportDirectory, NSUserDomainMask, YES);
   ASSERT([paths count] == 1);
@@ -41,13 +41,13 @@
 }
 
 // Return a (leaked) copy of a directory name suitable for use as a $TEMP.
-char* IOSTempDirectory() {
+char* AppleTempDirectory() {
   return copyString(NSTemporaryDirectory());
 }
 
 // Return the binary's path.
-void IOSAppName(rtc::Pathname* path) {
-  NSProcessInfo *pInfo = [NSProcessInfo processInfo];
+void AppleAppName(rtc::Pathname* path) {
+  NSProcessInfo* pInfo = [NSProcessInfo processInfo];
   NSString* argv0 = [[pInfo arguments] objectAtIndex:0];
   path->SetPathname([argv0 UTF8String]);
 }
diff --git a/webrtc/base/base.gyp b/webrtc/base/base.gyp
index 93f87b2..9baecd6 100644
--- a/webrtc/base/base.gyp
+++ b/webrtc/base/base.gyp
@@ -229,6 +229,7 @@
         'LOGGING=1',
       ],
       'sources': [
+        'applefilesystem.mm',
         'arraysize.h',
         'asyncfile.cc',
         'asyncfile.h',
@@ -277,7 +278,6 @@
         'httpcommon.h',
         'httprequest.cc',
         'httprequest.h',
-        'iosfilesystem.mm',
         'ipaddress.cc',
         'ipaddress.h',
         'linked_ptr.h',
@@ -603,19 +603,6 @@
               },
             },
           },
-          'conditions': [
-            ['target_arch=="ia32"', {
-              'all_dependent_settings': {
-                'link_settings': {
-                  'xcode_settings': {
-                    'OTHER_LDFLAGS': [
-                      '-framework Carbon',
-                    ],
-                  },
-                },
-              },
-            }],
-          ],
         }],
         ['OS=="win" and nacl_untrusted_build==0', {
           'sources': [
@@ -664,11 +651,6 @@
             },
           }
         }],
-        ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
-          'defines': [
-            'CARBON_DEPRECATED=YES',
-          ],
-        }],
         ['OS=="linux" or OS=="android"', {
           'sources': [
             'linux.cc',
diff --git a/webrtc/base/macsocketserver.cc b/webrtc/base/macsocketserver.cc
index 96b2091..b763e81 100644
--- a/webrtc/base/macsocketserver.cc
+++ b/webrtc/base/macsocketserver.cc
@@ -212,175 +212,4 @@
   ASSERT(run_loop_ == CFRunLoopGetCurrent());
   CFRunLoopStop(run_loop_);
 }
-
-///////////////////////////////////////////////////////////////////////////////
-// MacCarbonSocketServer
-///////////////////////////////////////////////////////////////////////////////
-#ifndef CARBON_DEPRECATED
-
-const UInt32 kEventClassSocketServer = 'MCSS';
-const UInt32 kEventWakeUp = 'WAKE';
-const EventTypeSpec kEventWakeUpSpec[] = {
-  { kEventClassSocketServer, kEventWakeUp }
-};
-
-std::string DecodeEvent(EventRef event) {
-  std::string str;
-  DecodeFourChar(::GetEventClass(event), &str);
-  str.push_back(':');
-  DecodeFourChar(::GetEventKind(event), &str);
-  return str;
-}
-
-MacCarbonSocketServer::MacCarbonSocketServer()
-    : event_queue_(GetCurrentEventQueue()), wake_up_(NULL) {
-  VERIFY(noErr == CreateEvent(NULL, kEventClassSocketServer, kEventWakeUp, 0,
-                              kEventAttributeUserEvent, &wake_up_));
-}
-
-MacCarbonSocketServer::~MacCarbonSocketServer() {
-  if (wake_up_) {
-    ReleaseEvent(wake_up_);
-  }
-}
-
-bool MacCarbonSocketServer::Wait(int cms, bool process_io) {
-  ASSERT(GetCurrentEventQueue() == event_queue_);
-
-  // Listen to all events if we're processing I/O.
-  // Only listen for our wakeup event if we're not.
-  UInt32 num_types = 0;
-  const EventTypeSpec* events = NULL;
-  if (!process_io) {
-    num_types = GetEventTypeCount(kEventWakeUpSpec);
-    events = kEventWakeUpSpec;
-  }
-
-  EventTargetRef target = GetEventDispatcherTarget();
-  EventTimeout timeout =
-      (kForever == cms) ? kEventDurationForever : cms / 1000.0;
-  EventTimeout end_time = GetCurrentEventTime() + timeout;
-
-  bool done = false;
-  while (!done) {
-    EventRef event;
-    OSStatus result = ReceiveNextEvent(num_types, events, timeout, true,
-                                       &event);
-    if (noErr == result) {
-      if (wake_up_ != event) {
-        LOG_F(LS_VERBOSE) << "Dispatching event: " << DecodeEvent(event);
-        result = SendEventToEventTarget(event, target);
-        if ((noErr != result) && (eventNotHandledErr != result)) {
-          LOG_E(LS_ERROR, OS, result) << "SendEventToEventTarget";
-        }
-      } else {
-        done = true;
-      }
-      ReleaseEvent(event);
-    } else if (eventLoopTimedOutErr == result) {
-      ASSERT(cms != kForever);
-      done = true;
-    } else if (eventLoopQuitErr == result) {
-      // Ignore this... we get spurious quits for a variety of reasons.
-      LOG_E(LS_VERBOSE, OS, result) << "ReceiveNextEvent";
-    } else {
-      // Some strange error occurred. Log it.
-      LOG_E(LS_WARNING, OS, result) << "ReceiveNextEvent";
-      return false;
-    }
-    if (kForever != cms) {
-      timeout = end_time - GetCurrentEventTime();
-    }
-  }
-  return true;
-}
-
-void MacCarbonSocketServer::WakeUp() {
-  if (!IsEventInQueue(event_queue_, wake_up_)) {
-    RetainEvent(wake_up_);
-    OSStatus result = PostEventToQueue(event_queue_, wake_up_,
-                                       kEventPriorityStandard);
-    if (noErr != result) {
-      LOG_E(LS_ERROR, OS, result) << "PostEventToQueue";
-    }
-  }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// MacCarbonAppSocketServer
-///////////////////////////////////////////////////////////////////////////////
-
-MacCarbonAppSocketServer::MacCarbonAppSocketServer()
-    : event_queue_(GetCurrentEventQueue()) {
-  // Install event handler
-  VERIFY(noErr == InstallApplicationEventHandler(
-      NewEventHandlerUPP(WakeUpEventHandler), 1, kEventWakeUpSpec, this,
-      &event_handler_));
-
-  // Install a timer and set it idle to begin with.
-  VERIFY(noErr == InstallEventLoopTimer(GetMainEventLoop(),
-                                        kEventDurationForever,
-                                        kEventDurationForever,
-                                        NewEventLoopTimerUPP(TimerHandler),
-                                        this,
-                                        &timer_));
-}
-
-MacCarbonAppSocketServer::~MacCarbonAppSocketServer() {
-  RemoveEventLoopTimer(timer_);
-  RemoveEventHandler(event_handler_);
-}
-
-OSStatus MacCarbonAppSocketServer::WakeUpEventHandler(
-    EventHandlerCallRef next, EventRef event, void *data) {
-  QuitApplicationEventLoop();
-  return noErr;
-}
-
-void MacCarbonAppSocketServer::TimerHandler(
-    EventLoopTimerRef timer, void *data) {
-  QuitApplicationEventLoop();
-}
-
-bool MacCarbonAppSocketServer::Wait(int cms, bool process_io) {
-  if (!process_io && cms == 0) {
-    // No op.
-    return true;
-  }
-  if (kForever != cms) {
-    // Start a timer.
-    OSStatus error =
-        SetEventLoopTimerNextFireTime(timer_, cms / 1000.0);
-    if (error != noErr) {
-      LOG(LS_ERROR) << "Failed setting next fire time.";
-    }
-  }
-  if (!process_io) {
-    // No way to listen to common modes and not get socket events, unless
-    // we disable each one's callbacks.
-    EnableSocketCallbacks(false);
-  }
-  RunApplicationEventLoop();
-  if (!process_io) {
-    // Reenable them.  Hopefully this won't cause spurious callbacks or
-    // missing ones while they were disabled.
-    EnableSocketCallbacks(true);
-  }
-  return true;
-}
-
-void MacCarbonAppSocketServer::WakeUp() {
-  // TODO: No-op if there's already a WakeUp in flight.
-  EventRef wake_up;
-  VERIFY(noErr == CreateEvent(NULL, kEventClassSocketServer, kEventWakeUp, 0,
-                              kEventAttributeUserEvent, &wake_up));
-  OSStatus result = PostEventToQueue(event_queue_, wake_up,
-                                       kEventPriorityStandard);
-  if (noErr != result) {
-    LOG_E(LS_ERROR, OS, result) << "PostEventToQueue";
-  }
-  ReleaseEvent(wake_up);
-}
-
-#endif
 } // namespace rtc
diff --git a/webrtc/base/macsocketserver.h b/webrtc/base/macsocketserver.h
index f85628b..ed6d60e 100644
--- a/webrtc/base/macsocketserver.h
+++ b/webrtc/base/macsocketserver.h
@@ -11,9 +11,7 @@
 #define WEBRTC_BASE_MACSOCKETSERVER_H__
 
 #include <set>
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) // Invalid on IOS
-#include <Carbon/Carbon.h>
-#endif
+#include <CoreFoundation/CoreFoundation.h>
 #include "webrtc/base/physicalsocketserver.h"
 
 namespace rtc {
@@ -76,61 +74,6 @@
   CFRunLoopRef run_loop_;
   CFRunLoopSourceRef wake_up_;
 };
-
-#ifndef CARBON_DEPRECATED
-
-///////////////////////////////////////////////////////////////////////////////
-// MacCarbonSocketServer
-///////////////////////////////////////////////////////////////////////////////
-
-// Interacts with the Carbon event queue. While idle it will block,
-// waiting for events. When the socket server has work to do, it will
-// post a 'wake up' event to the queue, causing the thread to exit the
-// event loop until the next call to Wait. Other events are dispatched
-// to their target. Supports Carbon and Cocoa UI interaction.
-class MacCarbonSocketServer : public MacBaseSocketServer {
- public:
-  MacCarbonSocketServer();
-  virtual ~MacCarbonSocketServer();
-
-  // SocketServer Interface
-  virtual bool Wait(int cms, bool process_io);
-  virtual void WakeUp();
-
- private:
-  EventQueueRef event_queue_;
-  EventRef wake_up_;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-// MacCarbonAppSocketServer
-///////////////////////////////////////////////////////////////////////////////
-
-// Runs the Carbon application event loop on the current thread while
-// idle. When the socket server has work to do, it will post an event
-// to the queue, causing the thread to exit the event loop until the
-// next call to Wait. Other events are automatically dispatched to
-// their target.
-class MacCarbonAppSocketServer : public MacBaseSocketServer {
- public:
-  MacCarbonAppSocketServer();
-  virtual ~MacCarbonAppSocketServer();
-
-  // SocketServer Interface
-  virtual bool Wait(int cms, bool process_io);
-  virtual void WakeUp();
-
- private:
-  static OSStatus WakeUpEventHandler(EventHandlerCallRef next, EventRef event,
-                                     void *data);
-  static void TimerHandler(EventLoopTimerRef timer, void *data);
-
-  EventQueueRef event_queue_;
-  EventHandlerRef event_handler_;
-  EventLoopTimerRef timer_;
-};
-
-#endif
 } // namespace rtc
 
 #endif  // WEBRTC_BASE_MACSOCKETSERVER_H__
diff --git a/webrtc/base/macsocketserver_unittest.cc b/webrtc/base/macsocketserver_unittest.cc
index 87cfe07..520d226 100644
--- a/webrtc/base/macsocketserver_unittest.cc
+++ b/webrtc/base/macsocketserver_unittest.cc
@@ -31,64 +31,6 @@
   SocketServer* ss_;
 };
 
-#ifndef CARBON_DEPRECATED
-
-// Test that MacCFSocketServer::Wait works as expected.
-TEST(MacCFSocketServerTest, TestWait) {
-  MacCFSocketServer server;
-  uint32_t start = Time();
-  server.Wait(1000, true);
-  EXPECT_GE(TimeSince(start), 1000);
-}
-
-// Test that MacCFSocketServer::Wakeup works as expected.
-TEST(MacCFSocketServerTest, TestWakeup) {
-  MacCFSocketServer server;
-  WakeThread thread(&server);
-  uint32_t start = Time();
-  thread.Start();
-  server.Wait(10000, true);
-  EXPECT_LT(TimeSince(start), 10000);
-}
-
-// Test that MacCarbonSocketServer::Wait works as expected.
-TEST(MacCarbonSocketServerTest, TestWait) {
-  MacCarbonSocketServer server;
-  uint32_t start = Time();
-  server.Wait(1000, true);
-  EXPECT_GE(TimeSince(start), 1000);
-}
-
-// Test that MacCarbonSocketServer::Wakeup works as expected.
-TEST(MacCarbonSocketServerTest, TestWakeup) {
-  MacCarbonSocketServer server;
-  WakeThread thread(&server);
-  uint32_t start = Time();
-  thread.Start();
-  server.Wait(10000, true);
-  EXPECT_LT(TimeSince(start), 10000);
-}
-
-// Test that MacCarbonAppSocketServer::Wait works as expected.
-TEST(MacCarbonAppSocketServerTest, TestWait) {
-  MacCarbonAppSocketServer server;
-  uint32_t start = Time();
-  server.Wait(1000, true);
-  EXPECT_GE(TimeSince(start), 1000);
-}
-
-// Test that MacCarbonAppSocketServer::Wakeup works as expected.
-TEST(MacCarbonAppSocketServerTest, TestWakeup) {
-  MacCarbonAppSocketServer server;
-  WakeThread thread(&server);
-  uint32_t start = Time();
-  thread.Start();
-  server.Wait(10000, true);
-  EXPECT_LT(TimeSince(start), 10000);
-}
-
-#endif
-
 // Test that MacAsyncSocket passes all the generic Socket tests.
 class MacAsyncSocketTest : public SocketTest {
  protected:
@@ -220,20 +162,4 @@
 TEST_F(MacAsyncSocketTest, DISABLED_TestGetSetOptionsIPv6) {
   SocketTest::TestGetSetOptionsIPv6();
 }
-
-#ifndef CARBON_DEPRECATED
-class MacCarbonAppAsyncSocketTest : public MacAsyncSocketTest {
-  virtual MacBaseSocketServer* CreateSocketServer() {
-    return new MacCarbonAppSocketServer();
-  };
-};
-
-TEST_F(MacCarbonAppAsyncSocketTest, TestSocketServerWaitIPv4) {
-  SocketTest::TestSocketServerWaitIPv4();
-}
-
-TEST_F(MacCarbonAppAsyncSocketTest, TestSocketServerWaitIPv6) {
-  SocketTest::TestSocketServerWaitIPv6();
-}
-#endif
 }  // namespace rtc
diff --git a/webrtc/base/macutils.cc b/webrtc/base/macutils.cc
index 3a07b81..c05526a 100644
--- a/webrtc/base/macutils.cc
+++ b/webrtc/base/macutils.cc
@@ -11,6 +11,8 @@
 #include <memory>
 #include <sstream>
 
+#include <CoreServices/CoreServices.h>
+
 #include "webrtc/base/common.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/macutils.h"
@@ -46,7 +48,6 @@
   return NULL != *str16;
 }
 
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
 void DecodeFourChar(UInt32 fc, std::string* out) {
   std::stringstream ss;
   ss << '\'';
@@ -128,82 +129,4 @@
   }
   return kMacOSNewer;
 }
-
-bool RunAppleScript(const std::string& script) {
-  // TODO(thaloun): Add a .mm file that contains something like this:
-  // NSString source from script
-  // NSAppleScript* appleScript = [[NSAppleScript alloc] initWithSource:&source]
-  // if (appleScript != nil) {
-  //   [appleScript executeAndReturnError:nil]
-  //   [appleScript release]
-#ifndef CARBON_DEPRECATED
-  ComponentInstance component = NULL;
-  AEDesc script_desc;
-  AEDesc result_data;
-  OSStatus err;
-  OSAID script_id, result_id;
-
-  AECreateDesc(typeNull, NULL, 0, &script_desc);
-  AECreateDesc(typeNull, NULL, 0, &result_data);
-  script_id = kOSANullScript;
-  result_id = kOSANullScript;
-
-  component = OpenDefaultComponent(kOSAComponentType, typeAppleScript);
-  if (component == NULL) {
-    LOG(LS_ERROR) << "Failed opening Apple Script component";
-    return false;
-  }
-  err = AECreateDesc(typeUTF8Text, script.data(), script.size(), &script_desc);
-  if (err != noErr) {
-    CloseComponent(component);
-    LOG(LS_ERROR) << "Failed creating Apple Script description";
-    return false;
-  }
-
-  err = OSACompile(component, &script_desc, kOSAModeCanInteract, &script_id);
-  if (err != noErr) {
-    AEDisposeDesc(&script_desc);
-    if (script_id != kOSANullScript) {
-      OSADispose(component, script_id);
-    }
-    CloseComponent(component);
-    LOG(LS_ERROR) << "Error compiling Apple Script";
-    return false;
-  }
-
-  err = OSAExecute(component, script_id, kOSANullScript, kOSAModeCanInteract,
-                   &result_id);
-
-  if (err == errOSAScriptError) {
-    LOG(LS_ERROR) << "Error when executing Apple Script: " << script;
-    AECreateDesc(typeNull, NULL, 0, &result_data);
-    OSAScriptError(component, kOSAErrorMessage, typeChar, &result_data);
-    int len = AEGetDescDataSize(&result_data);
-    char* data = (char*)malloc(len);
-    if (data != NULL) {
-      err = AEGetDescData(&result_data, data, len);
-      LOG(LS_ERROR) << "Script error: " << std::string(data, len);
-    }
-    AEDisposeDesc(&script_desc);
-    AEDisposeDesc(&result_data);
-    return false;
-  }
-  AEDisposeDesc(&script_desc);
-  if (script_id != kOSANullScript) {
-    OSADispose(component, script_id);
-  }
-  if (result_id != kOSANullScript) {
-    OSADispose(component, result_id);
-  }
-  CloseComponent(component);
-  return true;
-#else
-  // TODO(thaloun): Support applescripts with the NSAppleScript API.
-  return false;
-#endif  // CARBON_DEPRECATED
-}
-#endif  // WEBRTC_MAC && !defined(WEBRTC_IOS)
-
-///////////////////////////////////////////////////////////////////////////////
-
 }  // namespace rtc
diff --git a/webrtc/base/macutils.h b/webrtc/base/macutils.h
index 78c442f..fdcb3ee 100644
--- a/webrtc/base/macutils.h
+++ b/webrtc/base/macutils.h
@@ -12,9 +12,6 @@
 #define WEBRTC_BASE_MACUTILS_H__
 
 #include <CoreFoundation/CoreFoundation.h>
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-#include <Carbon/Carbon.h>
-#endif
 #include <string>
 
 namespace rtc {
@@ -44,10 +41,6 @@
 };
 
 MacOSVersionName GetOSVersionName();
-
-// Runs the given apple script. Only supports scripts that does not
-// require user interaction.
-bool RunAppleScript(const std::string& script);
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/webrtc/base/macutils_unittest.cc b/webrtc/base/macutils_unittest.cc
index e295eaa..d3e33e4 100644
--- a/webrtc/base/macutils_unittest.cc
+++ b/webrtc/base/macutils_unittest.cc
@@ -16,22 +16,3 @@
   LOG(LS_INFO) << "GetOsVersionName " << ver;
   EXPECT_NE(rtc::kMacOSUnknown, ver);
 }
-
-TEST(MacUtilsTest, RunAppleScriptCompileError) {
-  std::string script("set value to to 5");
-  EXPECT_FALSE(rtc::RunAppleScript(script));
-}
-
-TEST(MacUtilsTest, RunAppleScriptRuntimeError) {
-  std::string script("set value to 5 / 0");
-  EXPECT_FALSE(rtc::RunAppleScript(script));
-}
-
-#ifdef CARBON_DEPRECATED
-TEST(MacUtilsTest, DISABLED_RunAppleScriptSuccess) {
-#else
-TEST(MacUtilsTest, RunAppleScriptSuccess) {
-#endif
-  std::string script("set value to 5");
-  EXPECT_TRUE(rtc::RunAppleScript(script));
-}
diff --git a/webrtc/base/macwindowpicker.cc b/webrtc/base/macwindowpicker.cc
index bb97d20..d43d0e8 100644
--- a/webrtc/base/macwindowpicker.cc
+++ b/webrtc/base/macwindowpicker.cc
@@ -106,74 +106,7 @@
 }
 
 bool MacWindowPicker::MoveToFront(const WindowId& id) {
-  // Init if we're not already initialized.
-  if (get_window_list_desc_ == NULL && !Init()) {
-    return false;
-  }
-  CGWindowID ids[1];
-  ids[0] = id.id();
-  CFArrayRef window_id_array =
-      CFArrayCreate(NULL, reinterpret_cast<const void **>(&ids), 1, NULL);
-
-  CFArrayRef window_array =
-      reinterpret_cast<CGWindowListCreateDescriptionFromArrayProc>(
-          get_window_list_desc_)(window_id_array);
-  if (window_array == NULL || 0 == CFArrayGetCount(window_array)) {
-    // Could not find the window. It might have been closed.
-    LOG(LS_INFO) << "Window not found";
-    CFRelease(window_id_array);
-    return false;
-  }
-
-  CFDictionaryRef window = reinterpret_cast<CFDictionaryRef>(
-      CFArrayGetValueAtIndex(window_array, 0));
-  CFStringRef window_name_ref = reinterpret_cast<CFStringRef>(
-      CFDictionaryGetValue(window, kCGWindowName));
-  CFNumberRef application_pid = reinterpret_cast<CFNumberRef>(
-      CFDictionaryGetValue(window, kCGWindowOwnerPID));
-
-  int pid_val;
-  CFNumberGetValue(application_pid, kCFNumberIntType, &pid_val);
-  std::string window_name;
-  ToUtf8(window_name_ref, &window_name);
-
-  // Build an applescript that sets the selected window to front
-  // within the application. Then set the application to front.
-  bool result = true;
-  std::stringstream ss;
-  ss << "tell application \"System Events\"\n"
-     << "set proc to the first item of (every process whose unix id is "
-     << pid_val
-     << ")\n"
-     << "tell proc to perform action \"AXRaise\" of window \""
-     << window_name
-     << "\"\n"
-     << "set the frontmost of proc to true\n"
-     << "end tell";
-  if (!RunAppleScript(ss.str())) {
-    // This might happen to for example X applications where the X
-    // server spawns of processes with their own PID but the X server
-    // is still registered as owner to the application windows. As a
-    // workaround, we put the X server process to front, meaning that
-    // all X applications will show up. The drawback with this
-    // workaround is that the application that we really wanted to set
-    // to front might be behind another X application.
-    ProcessSerialNumber psn;
-    pid_t pid = pid_val;
-    int res = GetProcessForPID(pid, &psn);
-    if (res != 0) {
-      LOG(LS_ERROR) << "Failed getting process for pid";
-      result = false;
-    }
-    res = SetFrontProcess(&psn);
-    if (res != 0) {
-      LOG(LS_ERROR) << "Failed setting process to front";
-      result = false;
-    }
-  }
-  CFRelease(window_id_array);
-  CFRelease(window_array);
-  return result;
+  return false;
 }
 
 bool MacWindowPicker::GetDesktopList(DesktopDescriptionList* descriptions) {
diff --git a/webrtc/base/proxydetect.cc b/webrtc/base/proxydetect.cc
index 10e7a02..71910aa 100644
--- a/webrtc/base/proxydetect.cc
+++ b/webrtc/base/proxydetect.cc
@@ -1170,9 +1170,6 @@
       result = p_putPasswordInProxyInfo(proxy);
     }
 
-    // We created the dictionary with something that had the
-    // word 'copy' in it, so we have to release it, according
-    // to the Carbon memory management standards.
     CFRelease(proxyDict);
   } else {
     LOG(LS_ERROR) << "SCDynamicStoreCopyProxies failed";
@@ -1223,9 +1220,6 @@
       result = true;
   }
 
-  // We created the dictionary with something that had the
-  // word 'copy' in it, so we have to release it, according
-  // to the Carbon memory management standards.
   CFRelease(proxy_dict);
 
   return result;
diff --git a/webrtc/base/unixfilesystem.cc b/webrtc/base/unixfilesystem.cc
index b474324..b7a720e 100644
--- a/webrtc/base/unixfilesystem.cc
+++ b/webrtc/base/unixfilesystem.cc
@@ -17,7 +17,7 @@
 #include <unistd.h>
 
 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-#include <Carbon/Carbon.h>
+#include <CoreFoundation/CoreFoundation.h>
 #include <IOKit/IOCFBundle.h>
 #include <sys/statvfs.h>
 #include "webrtc/base/macutils.h"
@@ -50,13 +50,13 @@
 #include "webrtc/base/stream.h"
 #include "webrtc/base/stringutils.h"
 
-#if defined(WEBRTC_IOS)
-// Defined in iosfilesystem.mm.  No header file to discourage use
+#if defined(WEBRTC_MAC)
+// Defined in applefilesystem.mm.  No header file to discourage use
 // elsewhere; other places should use GetApp{Data,Temp}Folder() in
 // this file.  Don't copy/paste.  I mean it.
-char* IOSDataDirectory();
-char* IOSTempDirectory();
-void IOSAppName(rtc::Pathname* path);
+char* AppleDataDirectory();
+char* AppleTempDirectory();
+void AppleAppName(rtc::Pathname* path);
 #endif
 
 namespace rtc {
@@ -81,9 +81,9 @@
 UnixFilesystem::UnixFilesystem() {
 #if defined(WEBRTC_IOS)
   if (!provided_app_data_folder_)
-    provided_app_data_folder_ = IOSDataDirectory();
+    provided_app_data_folder_ = AppleDataDirectory();
   if (!provided_app_temp_folder_)
-    provided_app_temp_folder_ = IOSTempDirectory();
+    provided_app_temp_folder_ = AppleTempDirectory();
 #endif
 }
 
@@ -171,19 +171,10 @@
 
 bool UnixFilesystem::GetTemporaryFolder(Pathname &pathname, bool create,
                                         const std::string *append) {
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-  FSRef fr;
-  if (0 != FSFindFolder(kOnAppropriateDisk, kTemporaryFolderType,
-                        kCreateFolder, &fr))
-    return false;
-  unsigned char buffer[NAME_MAX+1];
-  if (0 != FSRefMakePath(&fr, buffer, arraysize(buffer)))
-    return false;
-  pathname.SetPathname(reinterpret_cast<char*>(buffer), "");
-#elif defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)
+#if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)
   ASSERT(provided_app_temp_folder_ != NULL);
   pathname.SetPathname(provided_app_temp_folder_, "");
-#else  // !WEBRTC_MAC || WEBRTC_IOS && !WEBRTC_ANDROID
+#else
   if (const char* tmpdir = getenv("TMPDIR")) {
     pathname.SetPathname(tmpdir, "");
   } else if (const char* tmp = getenv("TMP")) {
@@ -195,7 +186,7 @@
     pathname.SetPathname("/tmp/", "");
 #endif  // !P_tmpdir
   }
-#endif  // !WEBRTC_MAC || WEBRTC_IOS && !WEBRTC_ANDROID
+#endif  // defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)
   if (append) {
     ASSERT(!append->empty());
     pathname.AppendFolder(*append);
@@ -357,24 +348,10 @@
 }
 
 bool UnixFilesystem::GetAppPathname(Pathname* path) {
-#if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-  ProcessSerialNumber psn = { 0, kCurrentProcess };
-  CFDictionaryRef procinfo = ProcessInformationCopyDictionary(&psn,
-      kProcessDictionaryIncludeAllInformationMask);
-  if (NULL == procinfo)
-    return false;
-  CFStringRef cfpath = (CFStringRef) CFDictionaryGetValue(procinfo,
-      kIOBundleExecutableKey);
-  std::string path8;
-  bool success = ToUtf8(cfpath, &path8);
-  CFRelease(procinfo);
-  if (success)
-    path->SetPathname(path8);
-  return success;
-#elif defined(__native_client__)
+#if defined(__native_client__)
   return false;
-#elif WEBRTC_IOS
-  IOSAppName(path);
+#elif defined(WEBRTC_MAC)
+  AppleAppName(path);
   return true;
 #else  // WEBRTC_MAC && !defined(WEBRTC_IOS)
   char buffer[PATH_MAX + 2];