Exclude unit tests depending on FFMPEG, when FFMPEG is not used.

media/media.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': {
     'chromium_code': 1,
     # Override to dynamically link the cras (ChromeOS audio) library.
     'use_cras%': 0,
     # Option e.g. for Linux distributions to link pulseaudio directly
@@ skipping 1273 matching lines @@
           ],
         }],
         ['media_use_ffmpeg==1', {
           'dependencies': [
             '../third_party/ffmpeg/ffmpeg.gyp:ffmpeg',
           ],
         }, {  # media_use_ffmpeg==0
           'sources!': [
             'ffmpeg/ffmpeg_common_unittest.cc',
             'filters/audio_decoder_unittest.cc',
+            'filters/audio_file_reader_unittest.cc',
+            'filters/blocking_url_protocol_unittest.cc',
             'filters/ffmpeg_aac_bitstream_converter_unittest.cc',
             'filters/ffmpeg_demuxer_unittest.cc',
             'filters/ffmpeg_glue_unittest.cc',
             'filters/ffmpeg_h264_to_annex_b_bitstream_converter_unittest.cc',
+            'filters/in_memory_url_protocol_unittest.cc'
           ],
         }],
         # Even if FFmpeg is enabled on Android we don't want these.
         # TODO(watk): Refactor tests that could be made to run on Android. See
         # http://crbug.com/570762
         ['media_use_ffmpeg==0 or OS=="android"', {
           'sources!': [
             'base/audio_video_metadata_extractor_unittest.cc',
             'base/media_file_checker_unittest.cc',
             'filters/ffmpeg_video_decoder_unittest.cc',
@@ skipping 976 matching lines @@
                 'dependencies': [
                   '../build/linux/system.gyp:libdrm',
                 ]
               }],
             ],
           }
         ]
     }],
   ],
 }