Encrypted Media: Support Audio Decrypt-Only.

media/base/pipeline.h

Index: media/base/pipeline.h
diff --git a/media/base/pipeline.h b/media/base/pipeline.h
index 12371b4e3b511e7233cbfe5746b2110d7a9684a8..f504f270a8a43be415182a54aa07e0d77ea33fa6 100644
--- a/media/base/pipeline.h
+++ b/media/base/pipeline.h
@@ -12,6 +12,7 @@
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "media/base/audio_renderer.h"
+#include "media/base/decryptor.h"
 #include "media/base/demuxer.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
@@ -133,7 +134,8 @@ class MEDIA_EXPORT Pipeline
              const PipelineStatusCB& ended_cb,
              const PipelineStatusCB& error_cb,
              const PipelineStatusCB& seek_cb,
-             const BufferingStateCB& buffering_state_cb);
+             const BufferingStateCB& buffering_state_cb,
+             const SetDecryptorReadyCB& set_decryptor_ready_cb);
 
   // Asynchronously stops the pipeline, executing |stop_cb| when the pipeline
   // teardown has completed.
@@ -292,7 +294,8 @@ class MEDIA_EXPORT Pipeline
                  const PipelineStatusCB& ended_cb,
                  const PipelineStatusCB& error_cb,
                  const PipelineStatusCB& seek_cb,
-                 const BufferingStateCB& buffering_state_cb);
+                 const BufferingStateCB& buffering_state_cb,
+                 const SetDecryptorReadyCB& set_decryptor_ready_cb);
 
   // Stops and destroys all filters, placing the pipeline in the kStopped state.
   void StopTask(const base::Closure& stop_cb);
@@ -448,6 +451,7 @@ class MEDIA_EXPORT Pipeline
   PipelineStatusCB ended_cb_;
   PipelineStatusCB error_cb_;
   BufferingStateCB buffering_state_cb_;
+  SetDecryptorReadyCB set_decryptor_ready_cb_;
 
   // Renderer references used for setting the volume, playback rate, and
   // determining when playback has finished.