Rename ViewportObserver to SkyEngine

sky/shell/ui/engine.h

 // Copyright 2015 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 SKY_SHELL_UI_ENGINE_H_
 #define SKY_SHELL_UI_ENGINE_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 11 matching lines @@
 #include "sky/shell/service_provider.h"
 #include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace sky {
 class PlatformImpl;
 namespace shell {
 class Animator;
 
 class Engine : public UIDelegate,
-               public ViewportObserver,
+               public SkyEngine,
                public blink::ServiceProvider,
                public mojo::NavigatorHost,
                public blink::SkyViewClient {
  public:
   struct Config {
     Config();
     ~Config();
 
     ServiceProviderContext* service_provider_context;
 
     base::WeakPtr<GPUDelegate> gpu_delegate;
     scoped_refptr<base::SingleThreadTaskRunner> gpu_task_runner;
   };
 
   explicit Engine(const Config& config);
   ~Engine() override;
 
   base::WeakPtr<Engine> GetWeakPtr();
 
   static void Init(ServiceProviderContext* service_provider_context);
 
   void BeginFrame(base::TimeTicks frame_time);
   skia::RefPtr<SkPicture> Paint();
 
  private:
-  // UIDelegate methods:
-  void ConnectToViewportObserver(
-      mojo::InterfaceRequest<ViewportObserver> request) override;
+  // UIDelegate implementation:
+  void ConnectToEngine(mojo::InterfaceRequest<SkyEngine> request) override;
   void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) override;
   void OnOutputSurfaceDestroyed() override;
 
-  // ViewportObserver:
+  // SkyEngine implementation:
   void OnViewportMetricsChanged(int width, int height,
                                 float device_pixel_ratio) override;
   void OnInputEvent(InputEventPtr event) override;
 
   void RunFromNetwork(const mojo::String& url) override;
   void RunFromFile(const mojo::String& main,
                    const mojo::String& package_root) override;
   void RunFromSnapshot(const mojo::String& path) override;
 
   // SkyViewClient methods:
@@ skipping 14 matching lines @@
   void UpdateSkyViewSize();
 
   Config config_;
   scoped_ptr<Animator> animator_;
 
   scoped_ptr<blink::DartLibraryProvider> dart_library_provider_;
   std::unique_ptr<blink::SkyView> sky_view_;
 
   float device_pixel_ratio_;
   gfx::Size physical_size_;
-  mojo::Binding<ViewportObserver> viewport_observer_binding_;
+  mojo::Binding<SkyEngine> binding_;
 
   base::WeakPtrFactory<Engine> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Engine);
 };
 
 }  // namespace shell
 }  // namespace sky
 
 #endif  // SKY_SHELL_UI_ENGINE_H_