[Android WebView] Migrate the rendering code to a separate set of classes.

android_webview/renderer/view_renderer.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 ANDROID_WEBVIEW_RENDERER_VIEW_RENDERER_H_
+#define ANDROID_WEBVIEW_RENDERER_VIEW_RENDERER_H_
+
+#include "content/public/renderer/render_view_observer.h"
+
+namespace android_webview {
+
+// Render-process side of ViewRendererHost.
+// Implements required interaction with content::RenderView.
+class ViewRenderer : public content::RenderViewObserver {
+ public:
+  static void RenderViewCreated(content::RenderView* render_view);
+
+  // Required to be public by IPC_MESSAGE_HANDLER.
+  using content::RenderViewObserver::Send;
+
+ private:
+  ViewRenderer(content::RenderView* render_view);
+  virtual ~ViewRenderer();
+
+  // content::RenderViewObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void DidCommitCompositorFrame() OVERRIDE;
+
+  void OnEnableCapturePictureCallback(bool enable);
+  void OnCapturePictureSync();
+
+  bool capture_picture_enabled_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewRenderer);
+};
+
+}  // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_RENDERER_VIEW_RENDERER_H_