Bug Fix: Resize Event Trigger

content/renderer/media/webmediaplayer_ms_compositor.cc

Index: content/renderer/media/webmediaplayer_ms_compositor.cc
diff --git a/content/renderer/media/webmediaplayer_ms_compositor.cc b/content/renderer/media/webmediaplayer_ms_compositor.cc
index 1cd01e8377290c02e8ad4ff0d7447ff8741f8a8b..a95357b97bb202718fe22fc650e1406806ac70d6 100644
--- a/content/renderer/media/webmediaplayer_ms_compositor.cc
+++ b/content/renderer/media/webmediaplayer_ms_compositor.cc
@@ -395,10 +395,19 @@ void WebMediaPlayerMSCompositor::Render(base::TimeTicks deadline_min,
 void WebMediaPlayerMSCompositor::SetCurrentFrame(
     const scoped_refptr<media::VideoFrame>& frame) {
   current_frame_lock_.AssertAcquired();
+
   if (!current_frame_used_by_compositor_)
     ++dropped_frame_count_;
   current_frame_used_by_compositor_ = false;
+
+  const bool size_changed =
+      !current_frame_ ||
+      current_frame_->natural_size() != frame->natural_size();
   current_frame_ = frame;
+  if (size_changed) {
+    main_message_loop_->PostTask(
+        FROM_HERE, base::Bind(&WebMediaPlayerMS::TriggerResize, player_));
+  }
   main_message_loop_->PostTask(
       FROM_HERE, base::Bind(&WebMediaPlayerMS::ResetCanvasCache, player_));
 }