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

tools/web_dev_style/PRESUBMIT.py

Index: tools/web_dev_style/PRESUBMIT.py
diff --git a/tools/web_dev_style/PRESUBMIT.py b/tools/web_dev_style/PRESUBMIT.py
new file mode 100644
index 0000000000000000000000000000000000000000..d808f851dd1c9f89cf2989b77a4f1c07764f9c95
--- /dev/null
+++ b/tools/web_dev_style/PRESUBMIT.py
@@ -0,0 +1,34 @@
+# 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.
+
+
+def CheckChangeOnUpload(*args):
+  return _CommonChecks(*args)
+
+
+def CheckChangeOnCommit(*args):
+  return _CommonChecks(*args)
+
+
+def _CommonChecks(input_api, output_api):
+  cwd = input_api.PresubmitLocalPath()
+  path = input_api.os_path
+  files = [path.basename(f.LocalPath()) for f in input_api.AffectedFiles()]
+  tests = []
+
+  if 'css_checker.py' in files:
+    tests.append(path.join(cwd, 'css_checker_test.py'))
+
+  utils_changed = 'regex_check.py' in files or 'test_util.py' in files
+
+  if utils_changed or any(f for f in files if f.startswith('html_checker')):
+    tests.append(path.join(cwd, 'html_checker_test.py'))
+
+  if utils_changed or any(f for f in files if f.startswith('js_checker')):
+    tests.append(path.join(cwd, 'js_checker_test.py'))
+
+  if utils_changed or any(f for f in files if f.startswith('resource_checker')):
+    tests.append(path.join(cwd, 'resource_checker_test.py'))
+
+  return input_api.canned_checks.RunUnitTests(input_api, output_api, tests)