Use precompiled headers for most large projects.

media/media.gyp

 # Copyright (c) 2011 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 559 matching lines @@
               'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
             },
           },
           'defines': [
             '_CRT_SECURE_NO_WARNINGS=1',
           ],
         },
         {
           'target_name': 'mfplayer',
           'type': 'executable',
+          'msvs_disable_precompiled_header': '1',
           'dependencies': [
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
             'tools/mfplayer/mfplayer.h',
             'tools/mfplayer/mfplayer.cc',
             'tools/mfplayer/mf_playback_main.cc',
           ],
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '1',         # Set /SUBSYSTEM:CONSOLE
             },
           },
         },
         {
           'target_name': 'mfdecoder',
           'type': 'executable',
+          'msvs_disable_precompiled_header': '1',
           'dependencies': [
             'media',
             '../base/base.gyp:base',
           ],
           'include_dirs': [
             '..',
           ],
           'sources': [
             'tools/mfdecoder/main.cc',
             'tools/mfdecoder/mfdecoder.h',
@@ skipping 96 matching lines @@
             'tools/player_x11/gl_video_renderer.h',
             'tools/player_x11/player_x11.cc',
             'tools/player_x11/x11_video_renderer.cc',
             'tools/player_x11/x11_video_renderer.h',
           ],
         },
       ],
     }],
   ],
 }