[cc] Enable specifying a overhang/gutter texture.

content/renderer/gpu/render_widget_compositor.h

 // Copyright (c) 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_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 #define CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
 
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "cc/debug/rendering_stats.h"
 #include "cc/input/top_controls_state.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/rect.h"
 
 namespace ui {
 struct LatencyInfo;
 }
 
 namespace cc {
 class InputHandler;
 class Layer;
 class LayerTreeHost;
@@ skipping 37 matching lines @@
       const WebKit::WebSize& unused_deprecated,
       const WebKit::WebSize& device_viewport_size);
   virtual WebKit::WebSize layoutViewportSize() const;
   virtual WebKit::WebSize deviceViewportSize() const;
   virtual WebKit::WebFloatPoint adjustEventPointForPinchZoom(
       const WebKit::WebFloatPoint& point) const;
   virtual void setDeviceScaleFactor(float device_scale);
   virtual float deviceScaleFactor() const;
   virtual void setBackgroundColor(WebKit::WebColor color);
   virtual void setHasTransparentBackground(bool transparent);
+  virtual void setOverhangBitmap(SkBitmap);
   virtual void setVisible(bool visible);
   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
                                            float minimum,
                                            float maximum);
   virtual void startPageScaleAnimation(const WebKit::WebPoint& destination,
                                        bool use_anchor,
                                        float new_page_scale,
                                        double duration_sec);
   virtual void setNeedsAnimate();
   virtual void setNeedsRedraw();
@@ skipping 37 matching lines @@
 
   bool threaded_;
   bool suppress_schedule_composite_;
   RenderWidget* widget_;
   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_