Move chrome/browser/web_dev_style/ to tools/ to use from more places

chrome/browser/resources/PRESUBMIT.py

 # Copyright 2014 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.
 
 """Presubmit script for files in chrome/browser/resources.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 84 matching lines @@
   return input_api.canned_checks.CheckLongLines(
       input_api, output_api, 80, lambda x: x.LocalPath().endswith('.html'))
 
 
 def RunVulcanizeTests(input_api, output_api):
   presubmit_path = input_api.PresubmitLocalPath()
   tests = [input_api.os_path.join(presubmit_path, 'vulcanize_gn_test.py')]
   return input_api.canned_checks.RunUnitTests(input_api, output_api, tests)
 
 
+def _CheckWebDevStyle(input_api, output_api):
+  results = []
+
+  try:
+    import sys
+    old_sys_path = sys.path
+    cwd = input_api.PresubmitLocalPath()
+    sys.path += [input_api.os_path.join(cwd, '..', '..', '..', 'tools')]
+    import web_dev_style.presubmit_support
+    results += web_dev_style.presubmit_support.CheckStyle(input_api, output_api)
+  finally:
+    sys.path = old_sys_path
+
+  return results
+
+
 def _CheckChangeOnUploadOrCommit(input_api, output_api):
   results = CheckUserActionUpdate(input_api, output_api, ACTION_XML_PATH)
   affected = input_api.AffectedFiles()
   if any(f for f in affected if f.LocalPath().endswith('.html')):
     results += CheckHtml(input_api, output_api)
   if any(f for f in affected if f.LocalPath().endswith('vulcanize_gn.py')):
     results += RunVulcanizeTests(input_api, output_api)
+  results += _CheckWebDevStyle(input_api, output_api)
   return results
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return _CheckChangeOnUploadOrCommit(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return _CheckChangeOnUploadOrCommit(input_api, output_api)
 
 
 def PostUploadHook(cl, change, output_api):
   return output_api.EnsureCQIncludeTrybotsAreAdded(
     cl,
     [
       'master.tryserver.chromium.linux:closure_compilation',
     ],
     'Automatically added optional Closure bots to run on CQ.')