Connect Sky and Ganesh in SkyShell

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"
+#include "base/single_thread_task_runner.h"
+#include "mojo/public/cpp/system/core.h"
+#include "skia/ext/refptr.h"
 #include "sky/engine/public/web/WebFrameClient.h"
 #include "sky/engine/public/web/WebViewClient.h"
+#include "sky/shell/gpu_delegate.h"
 #include "sky/shell/ui_delegate.h"
+#include "third_party/skia/include/core/SkPicture.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace sky {
 namespace shell {
+class Animator;
 class PlatformImpl;
 
 class Engine : public UIDelegate,
                public blink::WebFrameClient,
                public blink::WebViewClient {
  public:
-  Engine();
+  struct Config {
+    base::WeakPtr<GPUDelegate> gpu_delegate;
+    scoped_refptr<base::SingleThreadTaskRunner> gpu_task_runner;
+  };
+
+  explicit Engine(const Config& config);
   ~Engine() override;
 
   base::WeakPtr<Engine> GetWeakPtr();
 
-  void Init();
+  void Init(mojo::ScopedMessagePipeHandle service_provider);
 
-  void OnViewportMetricsChanged(const gfx::Size& size,
+  void BeginFrame(base::TimeTicks frame_time);
+  skia::RefPtr<SkPicture> Paint();
+
+ private:
+  // UIDelegate methods:
+  void OnViewportMetricsChanged(const gfx::Size& physical_size,
                                 float device_pixel_ratio) override;
 
- private:
+  // WebViewClient methods:
+  void initializeLayerTreeView() override;
+  void scheduleVisualUpdate() override;
+
   scoped_ptr<PlatformImpl> platform_impl_;
+  scoped_ptr<Animator> animator_;
   blink::WebView* web_view_;
+  gfx::Size physical_size_;
 
   base::WeakPtrFactory<Engine> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Engine);
 };
 
 }  // namespace shell
 }  // namespace sky
 
 #endif  // SKY_SHELL_UI_ENGINE_H_