[#1] Pass gfx structs by const ref (presubmit check)

cc/PRESUBMIT.py

 # Copyright (c) 2012 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 cc.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into gcl.
 """
 
@@ skipping 98 matching lines @@
   black_list = tuple(black_list or input_api.DEFAULT_BLACK_LIST)
   source_file_filter = lambda x: input_api.FilterSourceFile(x,
                                                             white_list,
                                                             black_list)
 
   local_errors = []
 
   # Well-defined simple classes containing only <= 4 ints, or <= 2 floats.
   pass_by_value_types = ['base::Time',
                          'base::TimeTicks',
-                         'gfx::Point',
-                         'gfx::PointF',
-                         'gfx::Rect',
-                         'gfx::Size',
-                         'gfx::SizeF',
-                         'gfx::Vector2d',
-                         'gfx::Vector2dF',
                          ]
 
   for f in input_api.AffectedSourceFiles(source_file_filter):
     contents = input_api.ReadFile(f, 'rb')
     match = re.search(
       r'\bconst +' + '(?P<type>(%s))&' %
         string.join(pass_by_value_types, '|'),
       contents)
     if match:
       local_errors.append(output_api.PresubmitError(
@@ skipping 95 matching lines @@
   return results
 
 def GetPreferredTrySlaves(project, change):
   return [
     'linux_layout_rel',
     'win_gpu',
     'linux_gpu',
     'mac_gpu',
     'mac_gpu_retina',
   ]