Cosmetic cleanup to texture_layer mailboxes.

cc/cc.gyp

 # 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.
 
 {
   'variables': {
     'cc_source_files': [
       'animation.cc',
       'animation.h',
       'animation_curve.cc',
@@ skipping 245 matching lines @@
       'switches.h',
       'texture_copier.cc',
       'texture_copier.h',
       'texture_draw_quad.cc',
       'texture_draw_quad.h',
       'texture_layer.cc',
       'texture_layer.h',
       'texture_layer_client.h',
       'texture_layer_impl.cc',
       'texture_layer_impl.h',
+      'texture_mailbox.cc',
+      'texture_mailbox.h',
       'texture_uploader.cc',
       'texture_uploader.h',
       'thread.h',
       'thread_impl.cc',
       'thread_impl.h',
       'thread_proxy.cc',
       'thread_proxy.h',
       'tile.cc',
       'tile.h',
       'tile_draw_quad.cc',
@@ skipping 69 matching lines @@
       ],
       'all_dependent_settings': {
         'include_dirs': [
           # TODO(jamesr): Remove once https://webkit.org/b/105259 lands + rolls
           '<(webkit_src_dir)/Source/Platform/chromium'
         ]
       }
     },
   ],
 }