Use IDCompositionSurface to implement DirectCompositionSurfaceWin.

cc/output/output_surface.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include <deque>
 #include <memory>
 
@@ skipping 61 matching lines @@
 
   virtual void BindToClient(OutputSurfaceClient* client) = 0;
 
   virtual void EnsureBackbuffer() = 0;
   virtual void DiscardBackbuffer() = 0;
 
   // Bind the default framebuffer for drawing to, only valid for GL backed
   // OutputSurfaces.
   virtual void BindFramebuffer() = 0;
 
+  // Marks that the given rectangle will be drawn to on the default, bound
+  // framebuffer. Only valid for surfaces with set_draw_rectangle in the
+  // context capabilities.
+  virtual void SetDrawRectangle(const gfx::Rect& rect) {}
+
   // Get the class capable of informing cc of hardware overlay capability.
   virtual OverlayCandidateValidator* GetOverlayCandidateValidator() const = 0;
 
   // Returns true if a main image overlay plane should be scheduled.
   virtual bool IsDisplayedAsOverlayPlane() const = 0;
 
   // Get the texture for the main image's overlay.
   virtual unsigned GetOverlayTextureId() const = 0;
 
   // If this returns true, then the surface will not attempt to draw.
@@ skipping 22 matching lines @@
   scoped_refptr<VulkanContextProvider> vulkan_context_provider_;
   std::unique_ptr<SoftwareOutputDevice> software_device_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_