Allow setContentDecryptionModule() to get called when setting is done.

content/renderer/media/webmediaplayer_impl.h

Index: content/renderer/media/webmediaplayer_impl.h
diff --git a/content/renderer/media/webmediaplayer_impl.h b/content/renderer/media/webmediaplayer_impl.h
index d933302c6bd94281fa4a714f7b526fb1723dfc41..9d46a606dca649a73e8ea13dfd92862f877ea205 100644
--- a/content/renderer/media/webmediaplayer_impl.h
+++ b/content/renderer/media/webmediaplayer_impl.h
@@ -34,6 +34,7 @@ class RenderAudioSourceProvider;
 
 namespace blink {
 class WebContentDecryptionModule;
+class WebContentDecryptionModuleResult;
 class WebLocalFrame;
 }
 
@@ -154,6 +155,9 @@ class WebMediaPlayerImpl
 
   virtual void setContentDecryptionModule(
       blink::WebContentDecryptionModule* cdm);
+  virtual void setContentDecryptionModule(
+      blink::WebContentDecryptionModule* cdm,
+      blink::WebContentDecryptionModuleResult result);
 
   void OnPipelineSeeked(bool time_changed, media::PipelineStatus status);
   void OnPipelineEnded();
@@ -229,6 +233,12 @@ class WebMediaPlayerImpl
   // NULL immediately and reset.
   void SetDecryptorReadyCB(const media::DecryptorReadyCB& decryptor_ready_cb);
 
+  // Called when the ContentDecryptionModule has been attached to the
+  // pipeline/decoders.
+  void ContentDecryptionModuleAttached(
+      blink::WebContentDecryptionModuleResult result,
+      bool success);
+
   // Returns the current video frame from |compositor_|. Blocks until the
   // compositor can return the frame.
   scoped_refptr<media::VideoFrame> GetCurrentFrameFromCompositor();