Remove all remaining traces of MessageLoopProxy.

media/PRESUBMIT.py

 # Copyright 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 Chromium media component.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 
@@ skipping 59 matching lines @@
         'You added one or more references to the base::Time class and/or one\n'
         'of its member functions (or base::Clock/DefaultClock). In media\n'
         'code, it is rarely correct to use a clock susceptible to time skew!\n'
         'Instead, could you use base::TimeTicks to track the passage of\n'
         'real-world time?\n\n' +
         '\n'.join(problems))]
   else:
     return []
 
 
-def _CheckForMessageLoopProxy(input_api, output_api):
-  """Make sure media code only uses MessageLoopProxy for accessing the current
-  loop."""
-
-  message_loop_proxy_re = input_api.re.compile(
-      r'\bMessageLoopProxy(?!::current\(\))')
-
-  problems = []
-  for f in input_api.AffectedSourceFiles(_FilterFile):
-    for line_number, line in f.ChangedContents():
-      if message_loop_proxy_re.search(line):
-        problems.append('%s:%d' % (f.LocalPath(), line_number))
-
-  if problems:
-    return [output_api.PresubmitError(
-      'MessageLoopProxy should only be used for accessing the current loop.\n'
-      'Use the TaskRunner interfaces instead as they are more explicit about\n'
-      'the run-time characteristics. In most cases, SingleThreadTaskRunner\n'
-      'is a drop-in replacement for MessageLoopProxy.', problems)]
-
-  return []
-
-
 def _CheckForHistogramOffByOne(input_api, output_api):
   """Make sure histogram enum maxes are used properly"""
 
   # A general-purpose chunk of regex to match whitespace and/or comments
   # that may be interspersed with the code we're interested in:
   comment = r'/\*.*?\*/|//[^\n]*'
   whitespace = r'(?:[\n\t ]|(?:' + comment + r'))*'
 
   # The name is assumed to be a literal string.
   histogram_name = r'"[^"]*"'
@@ skipping 73 matching lines @@
   if problems:
     return [output_api.PresubmitError(
       'base::Time and derived classes should be passed by value and not by\n'
       'const ref, see base/time/time.h for more information.', problems)]
   return []
 
 
 def _CheckChange(input_api, output_api):
   results = []
   results.extend(_CheckForUseOfWrongClock(input_api, output_api))
-  results.extend(_CheckForMessageLoopProxy(input_api, output_api))
   results.extend(_CheckPassByValue(input_api, output_api))
   results.extend(_CheckForHistogramOffByOne(input_api, output_api))
   results += input_api.canned_checks.CheckPatchFormatted(input_api, output_api)
   return results
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return _CheckChange(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return _CheckChange(input_api, output_api)