Implement Android accessible hit testing using an IPC to the renderer process.

content/browser/renderer_host/render_widget_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_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 172 matching lines @@
   virtual void AccessibilityScrollToMakeVisible(
       int acc_obj_id, gfx::Rect subfocus) OVERRIDE;
   virtual void AccessibilityScrollToPoint(
       int acc_obj_id, gfx::Point point) OVERRIDE;
   virtual void AccessibilitySetTextSelection(
       int acc_obj_id, int start_offset, int end_offset) OVERRIDE;
   virtual bool AccessibilityViewHasFocus() const OVERRIDE;
   virtual gfx::Rect AccessibilityGetViewBounds() const OVERRIDE;
   virtual gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds)
       const OVERRIDE;
+  virtual void AccessibilityHitTest(const gfx::Point& point) OVERRIDE;
   virtual void AccessibilityFatalError() OVERRIDE;
 
   const NativeWebKeyboardEvent* GetLastKeyboardEvent() const;
 
   // Notification that the screen info has changed.
   void NotifyScreenInfoChanged();
 
   // Invalidates the cached screen info so that next resize request
   // will carry the up to date screen info. Unlike
   // |NotifyScreenInfoChanged|, this doesn't send a message to the renderer.
@@ skipping 682 matching lines @@
 #endif
 
   int64 last_input_number_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_