content: convert accessibility notifications to observer usage

content/browser/renderer_host/render_view_host_impl.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 190 matching lines @@
   virtual void SetWebUIProperty(const std::string& name,
                                 const std::string& value) OVERRIDE;
   virtual void SetZoomLevel(double level) OVERRIDE;
   virtual void Zoom(PageZoom zoom) OVERRIDE;
   virtual void SyncRendererPrefs() OVERRIDE;
   virtual void ToggleSpeechInput() OVERRIDE;
   virtual webkit_glue::WebPreferences GetWebkitPreferences() OVERRIDE;
   virtual void UpdateWebkitPreferences(
       const webkit_glue::WebPreferences& prefs) OVERRIDE;
   virtual void NotifyTimezoneChange() OVERRIDE;
+  virtual void SetAccessibilityLayoutCompleteCallbackForTesting(
+      const base::Closure& callback) OVERRIDE;
+  virtual void SetAccessibilityLoadCompleteCallbackForTesting(
+      const base::Closure& callback) OVERRIDE;
+  virtual void SetAccessibilityOtherCallbackForTesting(
+      const base::Closure& callback) OVERRIDE;
 
 #if defined(OS_ANDROID)
   virtual void ActivateNearestFindResult(int request_id,
                                          float x,
                                          float y) OVERRIDE;
   virtual void RequestFindMatchRects(int current_version) OVERRIDE;
   virtual void SynchronousFind(int request_id,
                                const string16& search_text,
                                const WebKit::WebFindOptions& options,
                                int* match_count,
@@ skipping 424 matching lines @@
   // the case of a cross-site transition ( = true).
   bool unload_ack_is_for_cross_site_transition_;
 
   bool are_javascript_messages_suppressed_;
 
   // The mapping of pending javascript calls created by
   // ExecuteJavascriptInWebFrameCallbackResult and their corresponding
   // callbacks.
   std::map<int, JavascriptResultCallback> javascript_callbacks_;
 
+  // Accessibility callbacks.
+  base::Closure accessibility_layout_callback_;
+  base::Closure accessibility_load_callback_;
+  base::Closure accessibility_other_callback_;
+
   // True if the render view can be shut down suddenly.
   bool sudden_termination_allowed_;
 
   // The session storage namespace to be used by the associated render view.
   scoped_refptr<SessionStorageNamespaceImpl> session_storage_namespace_;
 
   // Whether the accessibility tree should be saved, for unit testing.
   bool save_accessibility_tree_for_testing_;
 
   // A JSON serialized representation of the frame tree for the current document
@@ skipping 27 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_