Fix race in BrowserAccessibilityManagerWin creation.

content/browser/accessibility/browser_accessibility_manager_unittest.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 "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #if defined(OS_WIN)
 #include "content/browser/accessibility/browser_accessibility_win.h"
@@ skipping 73 matching lines @@
   }
   virtual gfx::Point AccessibilityOriginInScreen(
       const gfx::Rect& bounds) const OVERRIDE {
     return gfx::Point();
   }
   virtual void AccessibilityHitTest(const gfx::Point& point) OVERRIDE {}
   virtual void AccessibilityFatalError() OVERRIDE {
     got_fatal_error_ = true;
   }
 
+#if defined(OS_WIN)
+  virtual HWND GetAccessibleParentHWND() const OVERRIDE {
+    return GetDesktopWindow();
+  }
+  virtual IAccessible* GetParentIAccessible() const OVERRIDE {
+    return NULL;
+  }
+#endif
+
   bool got_fatal_error() const { return got_fatal_error_; }
   void reset_got_fatal_error() { got_fatal_error_ = false; }
 
 private:
   bool got_fatal_error_;
 };
 
 }  // anonymous namespace
 
 TEST(BrowserAccessibilityManagerTest, TestNoLeaks) {
@@ skipping 822 matching lines @@
   ASSERT_EQ(NULL, manager->NextInTreeOrder(node5_accessible));
 
   ASSERT_EQ(NULL, manager->PreviousInTreeOrder(NULL));
   ASSERT_EQ(node4_accessible, manager->PreviousInTreeOrder(node5_accessible));
   ASSERT_EQ(node3_accessible, manager->PreviousInTreeOrder(node4_accessible));
   ASSERT_EQ(node2_accessible, manager->PreviousInTreeOrder(node3_accessible));
   ASSERT_EQ(root_accessible, manager->PreviousInTreeOrder(node2_accessible));
 }
 
 }  // namespace content