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 d705af200966146df2473b4b1fbacbe11393a092..7b51cadfb52aed90ae9e6b2ed53a7dc73a661b02 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);
 
   // Notifies blink that the entire media element region has been invalidated.
   // This path is slower than notifying the compositor directly as it performs
@@ -237,6 +241,10 @@ class WebMediaPlayerImpl
   // NULL immediately and reset.
   void SetDecryptorReadyCB(const media::DecryptorReadyCB& decryptor_ready_cb);
 
+  // Called when setContentDecryptionModule() completes.
+  void ContentDecryptionModuleSet(
+      blink::WebContentDecryptionModuleResult result);
+
   // Returns the current video frame from |compositor_|. Blocks until the
   // compositor can return the frame.
   scoped_refptr<media::VideoFrame> GetCurrentFrameFromCompositor();