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

tools/web_dev_style/presubmit_support.py

Index: tools/web_dev_style/presubmit_support.py
diff --git a/tools/web_dev_style/presubmit_support.py b/tools/web_dev_style/presubmit_support.py
new file mode 100644
index 0000000000000000000000000000000000000000..3be6d6d67b251b67cdadfe762981252635c8b36a
--- /dev/null
+++ b/tools/web_dev_style/presubmit_support.py
@@ -0,0 +1,24 @@
+# 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.
+
+
+import css_checker
+import html_checker
+import js_checker
+import resource_checker
+
+
+def CheckStyle(input_api, output_api):
+  apis = input_api, output_api
+  is_resource = lambda f: f.LocalPath().endswith(('.html', '.css', '.js'))
+  checkers = [
+      css_checker.CSSChecker(*apis, file_filter=is_resource),
+      html_checker.HtmlChecker(*apis, file_filter=is_resource),
+      js_checker.JSChecker(*apis, file_filter=is_resource),
+      resource_checker.ResourceChecker(*apis, file_filter=is_resource),
+  ]
+  results = []
+  for checker in checkers:
+    results.extend(checker.RunChecks())
+  return results