PyLint fixes for tools-webrtc and webrtc/tools

Fix a lot of errors before bringing in the new config in
https://codereview.webrtc.org/2737963003/

BUG=webrtc:7303
NOTRY=True

Review-Url: https://codereview.webrtc.org/2736233003
Cr-Commit-Position: refs/heads/master@{#17137}
diff --git a/tools-webrtc/check_package_boundaries_test.py b/tools-webrtc/check_package_boundaries_test.py
index c59c485..1487a23 100755
--- a/tools-webrtc/check_package_boundaries_test.py
+++ b/tools-webrtc/check_package_boundaries_test.py
@@ -30,7 +30,7 @@
     self.messages = []
     self.test_dir = test_dir
 
-  def log(self, build_file_path, line_number, target_name, source_file,
+  def Log(self, build_file_path, line_number, target_name, source_file,
           subpackage):
     build_file_path = os.path.relpath(build_file_path, self.test_dir)
     build_file_path = build_file_path.replace(os.path.sep, '/')
@@ -48,19 +48,19 @@
     expected_messages = ReadPylFile(os.path.join(test_dir, 'expected.pyl'))
     self.assertListEqual(sorted(expected_messages), sorted(logger.messages))
 
-  def test_no_errors(self):
+  def testNoErrors(self):
     self.RunTest(os.path.join(TESTDATA_DIR, 'no_errors'))
 
-  def test_multiple_errors_single_target(self):
+  def testMultipleErrorsSingleTarget(self):
     self.RunTest(os.path.join(TESTDATA_DIR, 'multiple_errors_single_target'))
 
-  def test_multiple_errors_multiple_targets(self):
+  def testMultipleErrorsMultipleTargets(self):
     self.RunTest(os.path.join(TESTDATA_DIR, 'multiple_errors_multiple_targets'))
 
-  def test_common_prefix(self):
+  def testCommonPrefix(self):
     self.RunTest(os.path.join(TESTDATA_DIR, 'common_prefix'))
 
-  def test_all_build_files(self):
+  def testAllBuildFiles(self):
     self.RunTest(os.path.join(TESTDATA_DIR, 'all_build_files'), True)