RenderWidgetHostImpl cleanup

Delete some dead code in / around RenderWidgetHostImpl::SubmitCompositorFrame.

Bug: none
Change-Id: If4666e6213946340bd0bdadefe733160a945ae0c
Reviewed-on: https://chromium-review.googlesource.com/1220481Reviewed-by: Saman Sami <samans@chromium.org>
Commit-Queue: Fady Samuel <fsamuel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590466}

content/browser/renderer_host/render_widget_host_impl.cc

@@ -2857,11 +2857,6 @@ void RenderWidgetHostImpl::SubmitCompositorFrame(
 
   last_received_content_source_id_ = frame.metadata.content_source_id;
 
-  // |has_damage| is not transmitted.
-  frame.metadata.begin_frame_ack.has_damage = true;
-
-  last_frame_metadata_ = frame.metadata.Clone();
-
   if (enable_surface_synchronization_) {
     if (view_) {
       // If Surface Synchronization is on, then |new_content_rendering_timeout_|

content/browser/renderer_host/render_widget_host_impl.h

@@ -610,10 +610,6 @@ class CONTENT_EXPORT RenderWidgetHostImpl
           render_frame_metadata_observer_client_request,
       mojom::RenderFrameMetadataObserverPtr render_frame_metadata_observer);
 
-  const viz::CompositorFrameMetadata& last_frame_metadata() {
-    return last_frame_metadata_;
-  }
-
   RenderFrameMetadataProviderImpl* render_frame_metadata_provider() {
     return &render_frame_metadata_provider_;
   }
@@ -1131,18 +1127,8 @@ class CONTENT_EXPORT RenderWidgetHostImpl
   // we have a view. This is only used if |enable_viz_| is true.
   base::OnceCallback<void(const viz::FrameSinkId&)> create_frame_sink_callback_;
 
-  viz::CompositorFrameMetadata last_frame_metadata_;
-
   std::unique_ptr<FrameTokenMessageQueue> frame_token_message_queue_;
 
-  // If a CompositorFrame is submitted that references SharedBitmaps that don't
-  // exist yet, we keep it here until they are available.
-  struct {
-    viz::LocalSurfaceId local_surface_id;
-    viz::CompositorFrame frame;
-    base::Optional<viz::HitTestRegionList> hit_test_region_list;
-  } saved_frame_;
-
   bool enable_surface_synchronization_ = false;
   bool enable_viz_ = false;