Tiling priorities in Android Webview.

content/browser/android/in_process/synchronous_compositor_output_surface.h

 // Copyright 2013 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 CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 46 matching lines @@
   // OutputSurface.
   virtual bool BindToClient(cc::OutputSurfaceClient* surface_client) OVERRIDE;
   virtual void Reshape(const gfx::Size& size, float scale_factor) OVERRIDE;
   virtual void SetNeedsBeginFrame(bool enable) OVERRIDE;
   virtual void SwapBuffers(cc::CompositorFrame* frame) OVERRIDE;
 
   // Partial SynchronousCompositor API implementation.
   bool InitializeHwDraw(
       scoped_refptr<cc::ContextProvider> onscreen_context_provider);
   void ReleaseHwDraw();
-  scoped_ptr<cc::CompositorFrame> DemandDrawHw(gfx::Size surface_size,
-                                               const gfx::Transform& transform,
-                                               gfx::Rect viewport,
-                                               gfx::Rect clip);
+  scoped_ptr<cc::CompositorFrame> DemandDrawHw(
+      gfx::Size surface_size,
+      const gfx::Transform& transform,
+      gfx::Rect viewport,
+      gfx::Rect clip,
+      gfx::Rect device_rect_for_tiling);
   void ReturnResources(const cc::CompositorFrameAck& frame_ack);
   scoped_ptr<cc::CompositorFrame> DemandDrawSw(SkCanvas* canvas);
   void SetMemoryPolicy(const SynchronousCompositorMemoryPolicy& policy);
 
  private:
   class SoftwareDevice;
   friend class SoftwareDevice;
 
   void InvokeComposite(const gfx::Transform& transform,
                        gfx::Rect viewport,
                        gfx::Rect clip,
+                       gfx::Rect device_rect_for_tiling,
                        bool hardware_draw);
   bool CalledOnValidThread() const;
   SynchronousCompositorOutputSurfaceDelegate* GetDelegate();
 
   int routing_id_;
   bool needs_begin_frame_;
   bool invoking_composite_;
 
   gfx::Transform cached_hw_transform_;
   gfx::Rect cached_hw_viewport_;
   gfx::Rect cached_hw_clip_;
+  gfx::Rect cached_hw_device_rect_for_tiling_;
 
   // Only valid (non-NULL) during a DemandDrawSw() call.
   SkCanvas* current_sw_canvas_;
 
   cc::ManagedMemoryPolicy memory_policy_;
 
   cc::OutputSurfaceClient* output_surface_client_;
   scoped_ptr<cc::CompositorFrame> frame_holder_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_