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 ea95c529d4e6de083bd947f9c156c3d8478ae7ce..962ae3a7b93387afb6a8cbee5b4cbaf1ac3ceb37 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, false);
 
@@ -162,7 +162,7 @@ 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 };
@@ -187,4 +187,9 @@ TEST(MediaCodecBridgeTest, InvalidVorbisHeader) {
   delete[] very_large_header;
 }
 
+TEST(MediaCodecBridgeTest, CreateUnsupportedCodec) {
+  EXPECT_EQ(NULL, AudioCodecBridge::Create(kUnknownAudioCodec));
+  EXPECT_EQ(NULL, VideoCodecBridge::Create(kUnknownVideoCodec));
+}
+
 }  // namespace media