Introducing SurfaceReferenceFactory

third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h

Index: third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
diff --git a/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h b/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
index de6d5c82e871e0d7d510089d5f3fa163c9938213..c22727c3aaa6024cd00f77b1439f23b070846da4 100644
--- a/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
+++ b/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
@@ -6,14 +6,15 @@
 #define CanvasSurfaceLayerBridge_h
 
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "cc/surfaces/surface_id.h"
+#include "cc/surfaces/surface_reference_factory.h"
 #include "platform/PlatformExport.h"
 #include "public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom-blink.h"
 #include <memory>
 
 namespace cc {
 class SurfaceLayer;
-struct SurfaceSequence;
 }  // namespace cc
 
 namespace blink {
@@ -34,8 +35,11 @@ class PLATFORM_EXPORT CanvasSurfaceLayerBridge {
  private:
   scoped_refptr<cc::SurfaceLayer> m_surfaceLayer;
   std::unique_ptr<WebLayer> m_webLayer;
-  mojom::blink::OffscreenCanvasSurfacePtr m_service;
+  const mojom::blink::OffscreenCanvasSurfacePtr m_service;
   cc::SurfaceId m_surfaceId;
+  scoped_refptr<cc::SurfaceReferenceFactory> m_refFactory;
+
+  base::WeakPtrFactory<CanvasSurfaceLayerBridge> m_weakFactory;
 };
 
 }  // namespace blink