Small cleanups in the Mojo HTML viewer

mojo/services/html_viewer/weblayertreeview_impl.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 MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_IMPL_H_
 #define MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_IMPL_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 54 matching lines @@
   void DidFailToInitializeOutputSurface() override;
   void DidInitializeOutputSurface() override;
   void WillCommit() override;
   void DidCommit() override;
   void DidCommitAndDrawFrame() override;
   void DidCompleteSwapBuffers() override;
   void DidCompletePageScaleAnimation() override {}
   void RateLimitSharedMainThreadContext() override {}
 
   // blink::WebLayerTreeView implementation.
-  void setRootLayer(const blink::WebLayer& layer) override;
-  void clearRootLayer() override;
-  void setViewportSize(const blink::WebSize& device_viewport_size) override;
-  blink::WebSize deviceViewportSize() const override;
-  void setDeviceScaleFactor(float) override;
-  float deviceScaleFactor() const override;
-  void setBackgroundColor(blink::WebColor color) override;
-  void setHasTransparentBackground(bool has_transparent_background) override;
-  void setVisible(bool visible) override;
-  void setPageScaleFactorAndLimits(float page_scale_factor,
-                                   float minimum,
-                                   float maximum) override;
-  void startPageScaleAnimation(const blink::WebPoint& destination,
-                               bool use_anchor,
-                               float new_page_scale,
-                               double duration_sec) override;
-  void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) override {}
-  void setNeedsAnimate() override;
-  bool commitRequested() const override;
-  void didStopFlinging() override {}
-  void compositeAndReadbackAsync(
-      blink::WebCompositeAndReadbackAsyncCallback* callback) override {}
-  void finishAllRendering() override;
-  void setDeferCommits(bool defer_commits) override {}
-  void registerForAnimations(blink::WebLayer* layer) override;
-  void registerViewportLayers(
+  virtual void setRootLayer(const blink::WebLayer& layer);
+  virtual void clearRootLayer();
+  virtual void setViewportSize(const blink::WebSize& device_viewport_size);
+  virtual blink::WebSize deviceViewportSize() const;
+  virtual void setDeviceScaleFactor(float);
+  virtual float deviceScaleFactor() const;
+  virtual void setBackgroundColor(blink::WebColor color);
+  virtual void setHasTransparentBackground(bool has_transparent_background);
+  virtual void setVisible(bool visible);
+  virtual void setPageScaleFactorAndLimits(float page_scale_factor,
+                                           float minimum,
+                                           float maximum);
+  virtual void startPageScaleAnimation(const blink::WebPoint& destination,
+                                       bool use_anchor,
+                                       float new_page_scale,
+                                       double duration_sec);
+  virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) {}
+  virtual void setNeedsAnimate();
+  virtual bool commitRequested() const;
+  virtual void didStopFlinging() {}
+  virtual void compositeAndReadbackAsync(
+      blink::WebCompositeAndReadbackAsyncCallback* callback) {}
+  virtual void finishAllRendering();
+  virtual void setDeferCommits(bool defer_commits) {}
+  virtual void registerForAnimations(blink::WebLayer* layer);
+  virtual void registerViewportLayers(
       const blink::WebLayer* overscrollElasticityLayer,
       const blink::WebLayer* pageScaleLayerLayer,
       const blink::WebLayer* innerViewportScrollLayer,
-      const blink::WebLayer* outerViewportScrollLayer) override;
-  void clearViewportLayers() override;
-  void registerSelection(const blink::WebSelectionBound& start,
-                         const blink::WebSelectionBound& end) override {}
-  void clearSelection() override {}
-  void setShowFPSCounter(bool) override {}
-  void setShowPaintRects(bool) override {}
-  void setShowDebugBorders(bool) override {}
-  void setContinuousPaintingEnabled(bool) override {}
-  void setShowScrollBottleneckRects(bool) override {}
+      const blink::WebLayer* outerViewportScrollLayer);
+  virtual void clearViewportLayers();
+  virtual void registerSelection(const blink::WebSelectionBound& start,
+                                 const blink::WebSelectionBound& end) {}
+  virtual void clearSelection() {}
+  virtual void setShowFPSCounter(bool) {}
+  virtual void setShowPaintRects(bool) {}
+  virtual void setShowDebugBorders(bool) {}
+  virtual void setContinuousPaintingEnabled(bool) {}
+  virtual void setShowScrollBottleneckRects(bool) {}
 
   // OutputSurfaceMojoClient implementation.
   void DidCreateSurface(cc::SurfaceId id) override;
 
  private:
   void DidCreateSurfaceOnMainThread(cc::SurfaceId id);
 
   // widget_ and view_ will outlive us.
   blink::WebWidget* widget_;
   mojo::View* view_;
   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
   scoped_ptr<cc::OutputSurface> output_surface_;
   scoped_refptr<base::SingleThreadTaskRunner>
       main_thread_compositor_task_runner_;
   base::WeakPtr<WebLayerTreeViewImpl> main_thread_bound_weak_ptr_;
 
   base::WeakPtrFactory<WebLayerTreeViewImpl> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(WebLayerTreeViewImpl);
 };
 
 }  // namespace html_viewer
 
 #endif  // MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_IMPL_H_