media: Discard the previous decoder immediately on fallback

media/blink/webmediaplayer_impl.cc

Index: media/blink/webmediaplayer_impl.cc
diff --git a/media/blink/webmediaplayer_impl.cc b/media/blink/webmediaplayer_impl.cc
index f2ba41b4781f8ebe650e0c5cedd43ea28924c943..221e588e05009d49f5dad60d7b7902e67ad28db3 100644
--- a/media/blink/webmediaplayer_impl.cc
+++ b/media/blink/webmediaplayer_impl.cc
@@ -880,9 +880,7 @@ void WebMediaPlayerImpl::Paint(blink::WebCanvas* canvas,
   DCHECK(main_task_runner_->BelongsToCurrentThread());
   TRACE_EVENT0("media", "WebMediaPlayerImpl:paint");
 
-  // TODO(sandersd): Move this check into GetCurrentFrameFromCompositor() when
-  // we have other ways to check if decoder owns video frame.
-  // See http://crbug.com/595716 and http://crbug.com/602708
+  // We can't copy from protected frames.
   if (cdm_)
     return;
 
@@ -958,9 +956,7 @@ bool WebMediaPlayerImpl::CopyVideoTextureToPlatformTexture(
   DCHECK(main_task_runner_->BelongsToCurrentThread());
   TRACE_EVENT0("media", "WebMediaPlayerImpl:copyVideoTextureToPlatformTexture");
 
-  // TODO(sandersd): Move this check into GetCurrentFrameFromCompositor() when
-  // we have other ways to check if decoder owns video frame.
-  // See http://crbug.com/595716 and http://crbug.com/602708
+  // We can't copy from protected frames.
   if (cdm_)
     return false;