PRESUBMIT: Exclude supplement.gypi from _CheckNoSourcesAboveGyp check.

PRESUBMIT.py

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import json
 import os
@@ skipping 217 matching lines @@
   return []
 
 def _CheckNoSourcesAboveGyp(input_api, gyp_files, output_api):
   # Disallow referencing source files with paths above the GYP file location.
   source_pattern = input_api.re.compile(r'sources.*?\[(.*?)\]',
                                         re.MULTILINE | re.DOTALL)
   file_pattern = input_api.re.compile(r"'((\.\./.*?)|(<\(webrtc_root\).*?))'")
   violating_gyp_files = set()
   violating_source_entries = []
   for gyp_file in gyp_files:
+    if 'supplement.gypi' in gyp_file.LocalPath():
+      # Exclude supplement.gypi from this check, as the LSan and TSan
+      # suppression files are located in a different location.
+      continue
     contents = input_api.ReadFile(gyp_file)
     for source_block_match in source_pattern.finditer(contents):
       # Find all source list entries starting with ../ in the source block
       # (exclude overrides entries).
       for file_list_match in file_pattern.finditer(source_block_match.group(0)):
         source_file = file_list_match.group(0)
         if 'overrides/' not in source_file:
           violating_source_entries.append(source_file)
           violating_gyp_files.add(gyp_file)
   if violating_gyp_files:
@@ skipping 217 matching lines @@
     for builder in masters[master]:
       if 'presubmit' in builder:
         # Do not trigger presubmit builders, since they're likely to fail
         # (e.g. OWNERS checks before finished code review), and we're running
         # local presubmit anyway.
         pass
       else:
         try_config[master][builder] = ['defaulttests']
 
   return try_config