Revert of Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/renderer_host/render_widget_host_view_base.h

Index: content/browser/renderer_host/render_widget_host_view_base.h
diff --git a/content/browser/renderer_host/render_widget_host_view_base.h b/content/browser/renderer_host/render_widget_host_view_base.h
index 8f84a99a7f458c501238b61db68cca4118c78793..182976fe664a885a107e54e60973eb12ce9b3ae7 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.h
+++ b/content/browser/renderer_host/render_widget_host_view_base.h
@@ -50,6 +50,7 @@
 }
 
 namespace content {
+class BrowserAccessibilityDelegate;
 class BrowserAccessibilityManager;
 class SyntheticGesture;
 class SyntheticGestureTarget;
@@ -88,11 +89,6 @@
 
   blink::WebPopupType GetPopupType();
 
-  // Get the BrowserAccessibilityManager if it exists, may return NULL.
-  BrowserAccessibilityManager* GetBrowserAccessibilityManager() const;
-
-  void SetBrowserAccessibilityManager(BrowserAccessibilityManager* manager);
-
   // Return a value that is incremented each time the renderer swaps a new frame
   // to the view.
   uint32 RendererFrameNumber();
@@ -151,13 +147,11 @@
   // Return true if frame subscription is supported on this platform.
   virtual bool CanSubscribeFrame() const;
 
-  // Create a BrowserAccessibilityManager for this view if it's possible to
-  // create one and if one doesn't exist already. Some ports may not create
-  // one depending on the current state.
-  virtual void CreateBrowserAccessibilityManagerIfNeeded();
-
-  virtual void OnAccessibilitySetFocus(int acc_obj_id);
-  virtual void AccessibilityShowMenu(int acc_obj_id);
+  // Create a BrowserAccessibilityManager for this view.
+  virtual BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
+      BrowserAccessibilityDelegate* delegate);
+
+  virtual void AccessibilityShowMenu(const gfx::Point& point);
   virtual gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds);
 
   virtual SkColorType PreferredReadbackFormat();
@@ -426,9 +420,6 @@
  private:
   void FlushInput();
 
-  // Manager of the tree representation of the WebKit render tree.
-  scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
-
   gfx::Rect current_display_area_;
 
   uint32 renderer_frame_number_;