Create video and audio decoder threads on demand.

media/filters/ffmpeg_audio_decoder_unittest.cc

Index: media/filters/ffmpeg_audio_decoder_unittest.cc
diff --git a/media/filters/ffmpeg_audio_decoder_unittest.cc b/media/filters/ffmpeg_audio_decoder_unittest.cc
index eb634c7926b6f7f5d2e4cf33bc3436473604c26c..03961244b914ac78c9bbaac3eeb503cdb61f22b5 100644
--- a/media/filters/ffmpeg_audio_decoder_unittest.cc
+++ b/media/filters/ffmpeg_audio_decoder_unittest.cc
@@ -20,16 +20,22 @@ using ::testing::_;
 using ::testing::ReturnRef;
 using ::testing::StrictMock;
 
+namespace {

[Ami GONE FROM CHROMIUM, 2012/03/09 16:15:06]

s/anon namespace/static/ in media code

[tommi (sloooow) - chröme, 2012/03/11 18:49:36]

Done.

+// Used to inject our message loop into the FFmpegAudioDecoder.
+template<class T> T Identity(T t) { return t; }
+}  // end namespace
+
 namespace media {
 
 ACTION_P(InvokeReadPacket, test) {
   test->ReadPacket(arg0);
 }
-
+
 class FFmpegAudioDecoderTest : public testing::Test {
- public:
+ public:
   FFmpegAudioDecoderTest()
-      : decoder_(new FFmpegAudioDecoder(&message_loop_)),
+      : decoder_(new FFmpegAudioDecoder(base::Bind(&Identity<MessageLoop*>,
+                                                   &message_loop_))),
         demuxer_(new StrictMock<MockDemuxerStream>()) {
     CHECK(FFmpegGlue::GetInstance());