Bug 1245959 - Check video frame has non-zero dimensions before sending image to compositor. r=nical

MozReview-Commit-ID: 6PlWqE6is7Z

--HG--
extra : rebase_source : df4ff6689eea6ff8e95dd0f6d7e3e37b994875a1

dom/media/mediasink/VideoSink.cpp

@@ -355,7 +355,8 @@ VideoSink::RenderVideoFrames(int32_t aMaxFrames,
 
     frame->mSentToCompositor = true;
 
-    if (!frame->mImage || !frame->mImage->IsValid()) {
+    if (!frame->mImage || !frame->mImage->IsValid() ||
+        !frame->mImage->GetSize().width || !frame->mImage->GetSize().height) {
       continue;
     }