Connect MojoAudioDecoder to the service

MojoAudioDecoder is the client side part of the decoder
that runs in the renderer process.

This CL connects it to the remote service and propagates
the media task runner to it.

BUG=542910

Review URL: https://codereview.chromium.org/1797393007

Cr-Commit-Position: refs/heads/master@{#381861}

2 files changed, 17 insertions, 2 deletions

diff --git a/media/base/decoder_factory.cc b/media/base/decoder_factory.cc
index 8fa99ae..c9fe057 100644
--- a/media/base/decoder_factory.cc
+++ b/media/base/decoder_factory.cc
@@ -4,6 +4,8 @@
 
 #include "media/base/decoder_factory.h"
 
+#include "base/single_thread_task_runner.h"
+
 namespace media {
 
 DecoderFactory::DecoderFactory() {}
@@ -11,9 +13,11 @@ DecoderFactory::DecoderFactory() {}
 DecoderFactory::~DecoderFactory() {}
 
 void DecoderFactory::CreateAudioDecoders(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner,
     ScopedVector<AudioDecoder>* audio_decoders) {}
 
 void DecoderFactory::CreateVideoDecoders(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner,
     ScopedVector<VideoDecoder>* video_decoders) {}
 
 }  // namespace media
diff --git a/media/base/decoder_factory.h b/media/base/decoder_factory.h
index 21d66d2..9ae3f1b 100644
--- a/media/base/decoder_factory.h
+++ b/media/base/decoder_factory.h
@@ -6,9 +6,14 @@
 #define MEDIA_BASE_DECODER_FACTORY_H_
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "media/base/media_export.h"
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace media {
 
 class AudioDecoder;
@@ -21,10 +26,16 @@ class MEDIA_EXPORT DecoderFactory {
   virtual ~DecoderFactory();
 
   // Creates audio decoders and append them to the end of |audio_decoders|.
-  virtual void CreateAudioDecoders(ScopedVector<AudioDecoder>* audio_decoders);
+  // Decoders are single-threaded, each decoder should run on |task_runner|.
+  virtual void CreateAudioDecoders(
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+      ScopedVector<AudioDecoder>* audio_decoders);
 
   // Creates video decoders and append them to the end of |video_decoders|.
-  virtual void CreateVideoDecoders(ScopedVector<VideoDecoder>* video_decoders);
+  // Decoders are single-threaded, each decoder should run on |task_runner|.
+  virtual void CreateVideoDecoders(
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner,
+      ScopedVector<VideoDecoder>* video_decoders);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DecoderFactory);