[WebView] Add a new flushVisualState API to AwContents.

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 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_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 112 matching lines @@
   bool IsCrossProcessSubframe() override;
   GURL GetLastCommittedURL() override;
   gfx::NativeView GetNativeView() override;
   void ExecuteJavaScript(const base::string16& javascript) override;
   void ExecuteJavaScript(const base::string16& javascript,
                          const JavaScriptResultCallback& callback) override;
   void ExecuteJavaScriptForTests(const base::string16& javascript) override;
   RenderViewHost* GetRenderViewHost() override;
   ServiceRegistry* GetServiceRegistry() override;
   void ActivateFindInPageResultForAccessibility(int request_id) override;
+  void FlushVisualState(
+      const FlushVisualStateResultCallback& callback) override;
 
   // IPC::Sender
   bool Send(IPC::Message* msg) override;
 
   // IPC::Listener
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   // BrowserAccessibilityDelegate
   void AccessibilitySetFocus(int acc_obj_id) override;
   void AccessibilityDoDefaultAction(int acc_obj_id) override;
@@ skipping 286 matching lines @@
       const base::string16& error_description);
   void OnDidCommitProvisionalLoad(const IPC::Message& msg);
   void OnDidDropNavigation();
   void OnBeforeUnloadACK(
       bool proceed,
       const base::TimeTicks& renderer_before_unload_start_time,
       const base::TimeTicks& renderer_before_unload_end_time);
   void OnSwapOutACK();
   void OnContextMenu(const ContextMenuParams& params);
   void OnJavaScriptExecuteResponse(int id, const base::ListValue& result);
+  void OnFlushVisualStateResponse(int id);
   void OnRunJavaScriptMessage(const base::string16& message,
                               const base::string16& default_prompt,
                               const GURL& frame_url,
                               JavaScriptMessageType type,
                               IPC::Message* reply_msg);
   void OnRunBeforeUnloadConfirm(const GURL& frame_url,
                                 const base::string16& message,
                                 bool is_reload,
                                 IPC::Message* reply_msg);
   void OnTextSurroundingSelectionResponse(const base::string16& content,
@@ skipping 79 matching lines @@
   // Allows this RenderFrameHost to add and remove nodes in response to
   // messages from the renderer requesting DOM manipulation.
   FrameTree* frame_tree_;
 
   // The FrameTreeNode which this RenderFrameHostImpl is hosted in.
   FrameTreeNode* frame_tree_node_;
 
   // The mapping of pending JavaScript calls created by
   // ExecuteJavaScript and their corresponding callbacks.
   std::map<int, JavaScriptResultCallback> javascript_callbacks_;
+  std::map<int, FlushVisualStateResultCallback> flush_visual_state_callbacks_;
 
   int routing_id_;
 
   // The current state of this RenderFrameHost.
   RenderFrameHostImplState rfh_state_;
 
   // Tracks whether the RenderFrame for this RenderFrameHost has been created in
   // the renderer process.  Currently only used for subframes.
   // TODO(creis): Use this for main frames as well when RVH goes away.
   bool render_frame_created_;
@@ skipping 69 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_