Rename confusing child_id to unique_id_win

content/browser/accessibility/browser_accessibility_manager_win.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_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
 
 #include <oleacc.h>
 
 #include "base/win/scoped_comptr.h"
@@ skipping 20 matching lines @@
   // Get the closest containing HWND.
   HWND parent_hwnd() { return parent_hwnd_; }
 
   // The IAccessible for the parent window.
   IAccessible* parent_iaccessible() { return parent_iaccessible_; }
   void set_parent_iaccessible(IAccessible* parent_iaccessible) {
     parent_iaccessible_ = parent_iaccessible;
   }
 
   // BrowserAccessibilityManager methods
-  virtual void NotifyAccessibilityEvent(int type, BrowserAccessibility* node);
+  virtual void AddNodeToMap(BrowserAccessibility* node);
+  virtual void RemoveNode(BrowserAccessibility* node) OVERRIDE;
+  virtual void NotifyAccessibilityEvent(int type, BrowserAccessibility* node)
+      OVERRIDE;
 
   // Track this object and post a VISIBLE_DATA_CHANGED notification when
   // its container scrolls.
   // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
   void TrackScrollingObject(BrowserAccessibilityWin* node);
 
+  // Return a pointer to the object corresponding to the given windows-specific
+  // unique id, does not make a new reference.
+  BrowserAccessibilityWin* GetFromUniqueIdWin(LONG unique_id_win);
+
  private:
   // The closest ancestor HWND.
   HWND parent_hwnd_;
 
   // The accessibility instance for the parent window.
   IAccessible* parent_iaccessible_;
 
   // Give BrowserAccessibilityManager::Create access to our constructor.
   friend class BrowserAccessibilityManager;
 
   // Track the most recent object that has been asked to scroll and
   // post a notification directly on it when it reaches its destination.
   // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
   BrowserAccessibilityWin* tracked_scroll_object_;
 
+  // A mapping from the Windows-specific unique IDs (unique within the
+  // browser process) to renderer ids within this page.
+  base::hash_map<long, int32> unique_id_to_renderer_id_map_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_