cc: Partial draw without partial swap support.

android_webview/browser/parent_output_surface.h

 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_PARENT_OUTPUT_SURFACE_H_
 #define ANDROID_WEBVIEW_BROWSER_PARENT_OUTPUT_SURFACE_H_
 
 #include "base/macros.h"
 #include "cc/output/output_surface.h"
 
@@ skipping 18 matching lines @@
                bool has_alpha,
                bool use_stencil) override;
   void SwapBuffers(cc::OutputSurfaceFrame frame) override;
   bool HasExternalStencilTest() const override;
   void ApplyExternalStencil() override;
   uint32_t GetFramebufferCopyTextureFormat() override;
   cc::OverlayCandidateValidator* GetOverlayCandidateValidator() const override;
   bool IsDisplayedAsOverlayPlane() const override;
   unsigned GetOverlayTextureId() const override;
   bool SurfaceIsSuspendForRecycle() const override;
+  bool CanPartialDraw(const gfx::Rect& damage) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ParentOutputSurface);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_PARENT_OUTPUT_SURFACE_H_