Reformat all python code in third_party/blink/public/ for PEP8

- added .style.yapf files
- reformat *.py files in third_party/blink/public

Bug: 1051750
Change-Id: Ibf90a409f235cbdd96991c6c67a21cecea5f1547
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2057304Reviewed-by: Kent Tamura <tkent@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743472}

third_party/blink/public/.style.yapf

+[style]
+based_on_style = pep8

third_party/blink/public/common/scheduler/PRESUBMIT.py

@@ -13,9 +13,11 @@ def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
 
     original_sys_path = sys.path
     try:
-        sys.path = sys.path + [input_api.os_path.join(
-            input_api.PresubmitLocalPath(), '..', '..', '..', '..', '..',
-            'tools', 'metrics', 'histograms')]
+        sys.path = sys.path + [
+            input_api.os_path.join(input_api.PresubmitLocalPath(), '..', '..',
+                                   '..', '..', '..', 'tools', 'metrics',
+                                   'histograms')
+        ]
         import update_histogram_enum  # pylint: disable=F0401
     finally:
         sys.path = original_sys_path
@@ -38,8 +40,10 @@ def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
         end_marker=end_marker,
         strip_k_prefix=True)
     if presubmit_error:
-        return [output_api.PresubmitPromptWarning(presubmit_error,
-                                                  items=[source_path])]
+        return [
+            output_api.PresubmitPromptWarning(
+                presubmit_error, items=[source_path])
+        ]
     return []
 
 

third_party/blink/public/mojom/feature_policy/PRESUBMIT.py

 # Copyright 2018 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-
 """Blink feature-policy presubmit script.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
+
 def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
     import sys
 
     original_sys_path = sys.path
     try:
-        sys.path = sys.path + [input_api.os_path.join(
-            input_api.PresubmitLocalPath(), '..', '..', '..', '..', '..',
-            'tools', 'metrics', 'histograms')]
+        sys.path = sys.path + [
+            input_api.os_path.join(input_api.PresubmitLocalPath(), '..', '..',
+                                   '..', '..', '..', 'tools', 'metrics',
+                                   'histograms')
+        ]
         import update_histogram_enum
     finally:
         sys.path = original_sys_path
@@ -38,15 +40,19 @@ def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
         end_marker=end_marker,
         strip_k_prefix=True)
     if presubmit_error:
-        return [output_api.PresubmitPromptWarning(presubmit_error,
-                                                  items=[source_path])]
+        return [
+            output_api.PresubmitPromptWarning(
+                presubmit_error, items=[source_path])
+        ]
     return []
 
+
 def CheckChangeOnUpload(input_api, output_api):  # pylint: disable=C0103
     results = []
     results.extend(_RunUmaHistogramChecks(input_api, output_api))
     return results
 
+
 def CheckChangeOnCommit(input_api, output_api):  # pylint: disable=C0103
     results = []
     results.extend(_RunUmaHistogramChecks(input_api, output_api))

third_party/blink/public/mojom/use_counter/PRESUBMIT.py

@@ -18,8 +18,9 @@ def _RunUmaHistogramChecks(input_api, output_api):
     original_sys_path = sys.path
     try:
         sys.path = sys.path + [
-        input_api.os_path.join(input_api.PresubmitLocalPath(), '..', '..', '..',
-                               '..', '..', 'tools', 'metrics', 'histograms')
+            input_api.os_path.join(input_api.PresubmitLocalPath(), '..', '..',
+                                   '..', '..', '..', 'tools', 'metrics',
+                                   'histograms')
         ]
         import update_histogram_enum  # pylint: disable=F0401
         import update_use_counter_css  # pylint: disable=F0401

third_party/blink/public/mojom/web_feature/PRESUBMIT.py

 # Copyright 2017 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-
 """Blink frame presubmit script
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
@@ -14,9 +13,11 @@ def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
 
     original_sys_path = sys.path
     try:
-        sys.path = sys.path + [input_api.os_path.join(
-            input_api.PresubmitLocalPath(), '..', '..', '..', '..', '..',
-            'tools', 'metrics', 'histograms')]
+        sys.path = sys.path + [
+            input_api.os_path.join(input_api.PresubmitLocalPath(), '..', '..',
+                                   '..', '..', '..', 'tools', 'metrics',
+                                   'histograms')
+        ]
         import update_histogram_enum  # pylint: disable=F0401
     finally:
         sys.path = original_sys_path
@@ -38,8 +39,10 @@ def _RunUmaHistogramChecks(input_api, output_api):  # pylint: disable=C0103
         end_marker=end_marker,
         strip_k_prefix=True)
     if presubmit_error:
-        return [output_api.PresubmitPromptWarning(presubmit_error,
-                                                  items=[source_path])]
+        return [
+            output_api.PresubmitPromptWarning(
+                presubmit_error, items=[source_path])
+        ]
     return []