[PPAPI] MediaStream: do not crash when the source frame size is changed.

content/renderer/pepper/pepper_media_stream_video_track_host.cc

Index: content/renderer/pepper/pepper_media_stream_video_track_host.cc
diff --git a/content/renderer/pepper/pepper_media_stream_video_track_host.cc b/content/renderer/pepper/pepper_media_stream_video_track_host.cc
index 32b16ef26a64a43648bf74d72bc078665abc82d6..6442d1b2e68a871357f141f35c7725f998197464 100644
--- a/content/renderer/pepper/pepper_media_stream_video_track_host.cc
+++ b/content/renderer/pepper/pepper_media_stream_video_track_host.cc
@@ -404,7 +404,6 @@ void PepperMediaStreamVideoTrackHost::OnVideoFrame(
     return;
   }
 
-  CHECK(frame->coded_size() == source_frame_size_) << "Frame size is changed";
   CHECK_EQ(ppformat, source_frame_format_) << "Frame format is changed.";
 
   gfx::Size size = GetTargetSize(source_frame_size_, plugin_frame_size_);