Add Create() function to AudioCodecBridge and VideoCodecBridge to allow return of null pointers

media/base/android/media_codec_bridge_unittest.cc

Index: media/base/android/media_codec_bridge_unittest.cc
diff --git a/media/base/android/media_codec_bridge_unittest.cc b/media/base/android/media_codec_bridge_unittest.cc
index acf421e11dbb21ec873349b063f349a92eb31c11..8bf12ecb68090fa18d03f702a78e5772fbce2dc0 100644
--- a/media/base/android/media_codec_bridge_unittest.cc
+++ b/media/base/android/media_codec_bridge_unittest.cc
@@ -97,7 +97,7 @@ TEST(MediaCodecBridgeTest, Initialize) {
     return;
 
   scoped_ptr<media::MediaCodecBridge> media_codec;
-  media_codec.reset(new VideoCodecBridge(kCodecH264));
+  media_codec.reset(VideoCodecBridge::Create(kCodecH264));
 }
 
 TEST(MediaCodecBridgeTest, DoNormal) {
@@ -105,7 +105,7 @@ TEST(MediaCodecBridgeTest, DoNormal) {
     return;
 
   scoped_ptr<media::AudioCodecBridge> media_codec;
-  media_codec.reset(new AudioCodecBridge(kCodecMP3));
+  media_codec.reset(AudioCodecBridge::Create(kCodecMP3));
 
   media_codec->Start(kCodecMP3, 44100, 2, NULL, 0);
 
@@ -164,7 +164,7 @@ TEST(MediaCodecBridgeTest, InvalidVorbisHeader) {
     return;
 
   scoped_ptr<media::AudioCodecBridge> media_codec;
-  media_codec.reset(new AudioCodecBridge(kCodecVorbis));
+  media_codec.reset(AudioCodecBridge::Create(kCodecVorbis));
 
   // The first byte of the header is not 0x02.
   uint8 invalid_first_byte[] = { 0x00, 0xff, 0xff, 0xff, 0xff };