Exclude LayoutTests/imported from pan-project checks in WebKit/PRESUBMIT.py.

third_party/WebKit/PRESUBMIT.py

 # Copyright (c) 2013 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.
 
 """Top-level presubmit script for Blink.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
 import os
 import re
 import sys
 
 
-_EXCLUDED_PATHS = ()
+_EXCLUDED_PATHS = (
+    # LayoutTests/imported is excluded because these files are automatically
+    # imported, so we do not have direct control over their content.
+    r'^third_party[\\\/]WebKit[\\\/]LayoutTests[\\\/]imported[\\\/].*',
+)
 
 
 def _CheckForNonBlinkVariantMojomIncludes(input_api, output_api):
     pattern = input_api.re.compile(r'#include\s+.+\.mojom(.*)\.h[>"]')
     errors = []
     for f in input_api.AffectedFiles():
         for line_num, line in f.ChangedContents():
             m = pattern.match(line)
             if m and m.group(1) != '-blink':
                 errors.append('    %s:%d %s' % (
@@ skipping 344 matching lines @@
     new_description = description
     new_description += '\nCQ_INCLUDE_TRYBOTS=%s' % ';'.join(bots)
     results.append(output_api.PresubmitNotifyResult(
         'Automatically added slimming-paint-v2 tests to run on CQ due to '
         'changes in paint or compositing directories.'))
 
     if new_description != description:
         rietveld_obj.update_description(issue, new_description)
 
     return results