accessibility: Simpler AXTree root accessor.

content/browser/accessibility/browser_accessibility_manager_win.cc

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_manager_win.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/win/scoped_comptr.h"
@@ skipping 158 matching lines @@
 
   // Set this flag so that we'll keep trying to fire these focus events
   // if they're not successful this time.
   focus_event_on_root_needed_ = true;
 
   if (!delegate_ || !delegate_->AccessibilityViewHasFocus())
     return;
 
   // Try to fire a focus event on the root first and then the focused node.
   // This will clear focus_event_on_root_needed_ if successful.
-  if (focus_ != tree_->GetRoot())
+  if (focus_ != tree_->root())
     NotifyAccessibilityEvent(ui::AX_EVENT_FOCUS, GetRoot());
   BrowserAccessibilityManager::OnWindowFocused();
 }
 
 void BrowserAccessibilityManagerWin::UserIsReloading() {
   MaybeCallNotifyWinEvent(IA2_EVENT_DOCUMENT_RELOAD, GetRoot());
 }
 
 void BrowserAccessibilityManagerWin::NotifyAccessibilityEvent(
     ui::AXEvent event_type,
@@ skipping 193 matching lines @@
           child_manager->GetFromUniqueIdWin(unique_id_win);
       if (result)
         return result;
     }
   }
 
   return NULL;
 }
 
 }  // namespace content