Make the generated stubs weak. Enable the unittests that had conflicting symbols.

media/media.gyp

 # Copyright (c) 2009 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,
   },
   'includes': [
     '../build/common.gypi',
@@ skipping 153 matching lines @@
       ],
       'conditions': [
         ['OS=="linux"', {
           'dependencies': [
             # Needed for the following #include chain:
             #   base/run_all_unittests.cc
             #   ../base/test_suite.h
             #   gtk/gtk.h
             '../build/linux/system.gyp:gtk',
           ],
-          'sources!': [
-            'filters/ffmpeg_demuxer_unittest.cc',
-            'filters/ffmpeg_glue_unittest.cc',
-            'filters/ffmpeg_video_decoder_unittest.cc',
-          ],
-        }],
-        ['OS=="mac"', {
-          'sources!': [
-            'filters/ffmpeg_demuxer_unittest.cc',
-            'filters/ffmpeg_glue_unittest.cc',
-            'filters/ffmpeg_video_decoder_unittest.cc',
-          ],
         }],
       ],
     },
     {
       'target_name': 'media_bench',
       'type': 'executable',
       'msvs_guid': '45BC4F87-4604-4962-A751-7C7B29A080BF',
       'dependencies': [
         'media',
         '../base/base.gyp:base',
@@ skipping 41 matching lines @@
           'msvs_settings': {
             'VCLinkerTool': {
               'SubSystem': '2',         # Set /SUBSYSTEM:WINDOWS
             },
           },
         },
       ],
     }],
   ],
 }