Simplify access to LegacyRenderWidgetHostHWND.

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/memory/scoped_ptr.h"
 #include "base/win/scoped_comptr.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 
 namespace content {
 class BrowserAccessibilityWin;
 
-class LegacyRenderWidgetHostHWND;
-
 // Manages a tree of BrowserAccessibilityWin objects.
 class CONTENT_EXPORT BrowserAccessibilityManagerWin
     : public BrowserAccessibilityManager {
  public:
   BrowserAccessibilityManagerWin(
-      content::LegacyRenderWidgetHostHWND* accessible_hwnd,
-      IAccessible* parent_iaccessible,
       const ui::AXTreeUpdate& initial_tree,
       BrowserAccessibilityDelegate* delegate,
       BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
 
   virtual ~BrowserAccessibilityManagerWin();
 
   static ui::AXTreeUpdate GetEmptyDocument();
 
   // Get the closest containing HWND.
-  HWND parent_hwnd() { return parent_hwnd_; }
+  HWND GetParentHWND();
 
   // The IAccessible for the parent window.
-  IAccessible* parent_iaccessible() { return parent_iaccessible_; }
-  void set_parent_iaccessible(IAccessible* parent_iaccessible) {
-    parent_iaccessible_ = parent_iaccessible;
-  }
-
-  void SetAccessibleHWND(LegacyRenderWidgetHostHWND* accessible_hwnd);
+  IAccessible* GetParentIAccessible();
 
   // Calls NotifyWinEvent if the parent window's IAccessible pointer is known.
   void MaybeCallNotifyWinEvent(DWORD event, LONG child_id);
 
   // AXTree methods
   virtual void OnNodeWillBeDeleted(ui::AXNode* node) OVERRIDE;
   virtual void OnNodeCreated(ui::AXNode* node) OVERRIDE;
 
   // BrowserAccessibilityManager methods
   virtual void OnWindowFocused() OVERRIDE;
@@ skipping 10 matching lines @@
   BrowserAccessibilityWin* GetFromUniqueIdWin(LONG unique_id_win);
 
   // Called when |accessible_hwnd_| is deleted by its parent.
   void OnAccessibleHwndDeleted();
 
  protected:
   // BrowserAccessibilityManager methods
   virtual void OnRootChanged(ui::AXNode* new_root) OVERRIDE;
 
  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 accessibility ids within this page.
   base::hash_map<long, int32> unique_id_to_ax_id_map_;
 
-  // Owned by its parent; OnAccessibleHwndDeleted gets called upon deletion.
-  LegacyRenderWidgetHostHWND* accessible_hwnd_;
-
   // Set to true if we need to fire a focus event on the root as soon as
   // possible.
   bool focus_event_on_root_needed_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_