Use MojoCompositorFrameSink in RendererCompositorFrameSink

content/browser/frame_host/render_widget_host_view_child_frame.cc

Index: content/browser/frame_host/render_widget_host_view_child_frame.cc
diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.cc b/content/browser/frame_host/render_widget_host_view_child_frame.cc
index 4a33acda21c830f7bd97ef3cb61b7547ca28391d..98fe44959abb57fe810dc1e3af1833630beb091e 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.cc
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.cc
@@ -347,14 +347,14 @@ void RenderWidgetHostViewChildFrame::GestureEventAck(
 }
 
 void RenderWidgetHostViewChildFrame::DidReceiveCompositorFrameAck() {
-  if (!host_)
-    return;
-  host_->SendReclaimCompositorResources(true /* is_swap_ack */,
-                                        cc::ReturnedResourceArray());
+  DCHECK(renderer_compositor_frame_sink_);
+  renderer_compositor_frame_sink_->DidReceiveCompositorFrameAck();
 }
 
-void RenderWidgetHostViewChildFrame::DidCreateNewRendererCompositorFrameSink() {
+void RenderWidgetHostViewChildFrame::DidCreateNewRendererCompositorFrameSink(
+    cc::mojom::MojoCompositorFrameSinkClient* renderer_compositor_frame_sink) {
   ResetCompositorFrameSinkSupport();
+  renderer_compositor_frame_sink_ = renderer_compositor_frame_sink;
   CreateCompositorFrameSinkSupport();
   has_frame_ = false;
 }
@@ -617,14 +617,12 @@ bool RenderWidgetHostViewChildFrame::HasAcceleratedSurface(
 
 void RenderWidgetHostViewChildFrame::ReclaimResources(
     const cc::ReturnedResourceArray& resources) {
-  if (!host_)
-    return;
-  host_->SendReclaimCompositorResources(false /* is_swap_ack */, resources);
+  renderer_compositor_frame_sink_->ReclaimResources(resources);
 }
 
 void RenderWidgetHostViewChildFrame::OnBeginFrame(
     const cc::BeginFrameArgs& args) {
-  host_->Send(new ViewMsg_BeginFrame(host_->GetRoutingID(), args));
+  renderer_compositor_frame_sink_->OnBeginFrame(args);
 }
 
 void RenderWidgetHostViewChildFrame::SetNeedsBeginFrames(