Fix accessible touch exploration inside of iframes.

content/browser/accessibility/browser_accessibility_manager.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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 232 matching lines @@
   // objects.
   virtual void OnLocationChanges(
       const std::vector<AccessibilityHostMsg_LocationChangeParams>& params);
 
   // Called when a new find in page result is received. We hold on to this
   // information and don't activate it until the user requests it.
   void OnFindInPageResult(
       int request_id, int match_index, int start_id, int start_offset,
       int end_id, int end_offset);
 
+  // Called in response to a hit test, when the object hit has a child frame
+  // (like an iframe element or browser plugin), and we need to do another
+  // hit test recursively.
+  void OnChildFrameHitTestResult(const gfx::Point& point, int hit_obj_id);
+
   // This is called when the user has committed to a find in page query,
   // e.g. by pressing enter or tapping on the next / previous result buttons.
   // If a match has already been received for this request id,
   // activate the result now by firing an accessibility event. If a match
   // has not been received, we hold onto this request id and update it
   // when OnFindInPageResult is called.
   void ActivateFindInPageResult(int request_id);
 
 #if defined(OS_WIN)
   BrowserAccessibilityManagerWin* ToBrowserAccessibilityManagerWin();
@@ skipping 159 matching lines @@
   // node within that parent tree. It's computed as needed and cached for
   // speed so that it can be accessed quickly if it hasn't changed.
   int parent_node_id_from_parent_tree_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_