Migrate BrowserAccessibility windows unique id handling to AXPlatformNodeWin.

content/browser/accessibility/browser_accessibility_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_win.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
-
+#include "ui/accessibility/platform/ax_platform_node_base.h"
 #include "ui/base/win/atl_module.h"
 
 namespace content {
 
 // static
 BrowserAccessibility* BrowserAccessibility::Create() {
   return new BrowserAccessibilityWin();
 }
 
 BrowserAccessibilityWin::BrowserAccessibilityWin() {
@@ skipping 18 matching lines @@
 void BrowserAccessibilityWin::UpdatePlatformAttributes() {
   GetCOM()->UpdateStep1ComputeWinAttributes();
   GetCOM()->UpdateStep2ComputeHypertext();
   GetCOM()->UpdateStep3FireEvents(false);
 }
 
 void BrowserAccessibilityWin::OnSubtreeWillBeDeleted() {
   GetCOM()->FireNativeEvent(EVENT_OBJECT_HIDE);
 }
 
+int32_t BrowserAccessibilityWin::unique_id() const {
+  return GetCOM()->unique_id();
+}
+
 bool BrowserAccessibilityWin::IsNative() const {
   return true;
 }
 
 void BrowserAccessibilityWin::OnLocationChanged() {
   GetCOM()->FireNativeEvent(EVENT_OBJECT_LOCATIONCHANGE);
 }
 
 base::string16 BrowserAccessibilityWin::GetText() const {
   if (PlatformIsChildOfLeaf())
@@ skipping 27 matching lines @@
   return static_cast<BrowserAccessibilityWin*>(obj);
 }
 
 const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj) {
   DCHECK(!obj || obj->IsNative());
   return static_cast<const BrowserAccessibilityWin*>(obj);
 }
 
 }  // namespace content