Enforce constant size and device scale factor for surfaces

components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc

Index: components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc
diff --git a/components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc b/components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc
index b614fe8811b7dff661545abf62c54a390754023e..4d1ebd36228f75bdc56fc14316736f55222a53ca 100644
--- a/components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc
+++ b/components/viz/frame_sinks/gpu_root_compositor_frame_sink.cc
@@ -86,7 +86,12 @@ void GpuRootCompositorFrameSink::SetNeedsBeginFrame(bool needs_begin_frame) {
 void GpuRootCompositorFrameSink::SubmitCompositorFrame(
     const cc::LocalSurfaceId& local_surface_id,
     cc::CompositorFrame frame) {
-  support_->SubmitCompositorFrame(local_surface_id, std::move(frame));
+  bool result =

[danakj, 2017/05/19 19:31:39]

same here, the name result isnt adding anything

+      support_->SubmitCompositorFrame(local_surface_id, std::move(frame));
+  if (!result) {
+    compositor_frame_sink_binding_.Close();
+    OnClientConnectionLost();
+  }
 }
 
 void GpuRootCompositorFrameSink::BeginFrameDidNotSwap(