WIP: move OffscreenCanvas into new display compositor

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index 0ef85c81e601b624fd8d31388ca93f92c2ef9074..f1109802cb040279df5272349b2ddb2c8a765b38 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -22,7 +22,6 @@
 #include "build/build_config.h"
 #include "content/browser/child_process_launcher.h"
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
-#include "content/browser/renderer_host/offscreen_canvas_compositor_frame_sink_provider_impl.h"
 #include "content/browser/webrtc/webrtc_eventlog_host.h"
 #include "content/common/associated_interfaces.mojom.h"
 #include "content/common/content_export.h"
@@ -40,6 +39,7 @@
 #include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/public/interfaces/service.mojom.h"
 #include "services/ui/public/interfaces/gpu.mojom.h"
+#include "services/ui/surfaces/display_compositor.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gl/gpu_switching_observer.h"
 
@@ -345,7 +345,7 @@ class CONTENT_EXPORT RenderProcessHostImpl
 
   void CreateMusGpuRequest(ui::mojom::GpuRequest request);
   void CreateOffscreenCanvasCompositorFrameSinkProvider(
-      blink::mojom::OffscreenCanvasCompositorFrameSinkProviderRequest request);
+      cc::mojom::DisplayCompositorRequest request);
   void CreateStoragePartitionService(
       mojo::InterfaceRequest<mojom::StoragePartitionService> request);
 
@@ -599,8 +599,7 @@ class CONTENT_EXPORT RenderProcessHostImpl
   scoped_refptr<ResourceMessageFilter> resource_message_filter_;
   std::unique_ptr<GpuClient, BrowserThread::DeleteOnIOThread> gpu_client_;
 
-  std::unique_ptr<OffscreenCanvasCompositorFrameSinkProviderImpl>
-      offscreen_canvas_provider_;
+  std::unique_ptr<ui::DisplayCompositor> display_compositor_;
 
   mojom::RouteProviderAssociatedPtr remote_route_provider_;
   mojom::RendererAssociatedPtr renderer_interface_;