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

content/renderer/accessibility/renderer_accessibility_complete.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_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 52 matching lines @@
 
  private:
   // Handlers for messages from the browser to the renderer.
   void OnDoDefaultAction(int acc_obj_id);
   void OnEventsAck();
   void OnChangeScrollPosition(int acc_obj_id, int scroll_x, int scroll_y);
   void OnScrollToMakeVisible(int acc_obj_id, gfx::Rect subfocus);
   void OnScrollToPoint(int acc_obj_id, gfx::Point point);
   void OnSetFocus(int acc_obj_id);
   void OnSetTextSelection(int acc_obj_id, int start_offset, int end_offset);
+  void OnHitTest(gfx::Point point);
   void OnFatalError();
 
   // So we can queue up tasks to be executed later.
   base::WeakPtrFactory<RendererAccessibilityComplete> weak_factory_;
 
   // Events from Blink are collected until they are ready to be
   // sent to the browser.
   std::vector<AccessibilityHostMsg_EventParams> pending_events_;
 
   // The adapter that exposes Blink's accessibility tree to AXTreeSerializer.
@@ skipping 12 matching lines @@
 
   // Set if we are waiting for an accessibility event ack.
   bool ack_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererAccessibilityComplete);
 };
 
 #endif  // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_COMPLETE_H_
 
 }  // namespace content