Add unittest for H264BitReader.

content/content_common.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../build/temp_gyp/googleurl.gyp:googleurl',
     '../gpu/gpu.gyp:gles2_implementation',
     '../gpu/gpu.gyp:gpu_ipc',
@@ skipping 204 matching lines @@
     'common/gpu/stream_texture_manager_android.h',
     'common/gpu/gpu_watchdog.h',
     'common/gpu/image_transport_surface.h',
     'common/gpu/image_transport_surface.cc',
     'common/gpu/image_transport_surface_android.cc',
     'common/gpu/image_transport_surface_linux.cc',
     'common/gpu/image_transport_surface_mac.cc',
     'common/gpu/image_transport_surface_win.cc',
     'common/gpu/media/avc_config_record_builder.cc',
     'common/gpu/media/avc_config_record_builder.h',
+    'common/gpu/media/h264_bit_reader.cc',
+    'common/gpu/media/h264_bit_reader.h',
     'common/gpu/media/h264_parser.cc',
     'common/gpu/media/h264_parser.h',
     'common/gpu/media/mac_video_decode_accelerator.h',
     'common/gpu/media/mac_video_decode_accelerator.mm',
     'common/gpu/media/gpu_video_decode_accelerator.cc',
     'common/gpu/media/gpu_video_decode_accelerator.h',
     'common/gpu/sync_point_manager.h',
     'common/gpu/sync_point_manager.cc',
     'common/gpu/texture_image_transport_surface.h',
     'common/gpu/texture_image_transport_surface.cc',
@@ skipping 264 matching lines @@
         '../build/extract_from_cab.py',
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
       },
      ]
     }]
   ],
 }