Revert my change to get the tree green. Not sure why the tests became flaky....

chrome/browser/browser_accessibility_manager.h

 // Copyright (c) 2006-2008 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 CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_
 #define CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_
 
 #include <oaidl.h>  // Needed for VARIANT structure.
 #include <hash_map>
 
 #include "base/singleton.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/render_messages.h"
 
 class BrowserAccessibility;
 class RenderProcessHost;
 class RenderWidgetHost;
-struct ViewHostMsg_Accessibility_Out_Params;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // BrowserAccessibilityManager
 //
 // Used to manage instance creation and memory handling for browser side
 // accessibility. A singleton class. It implements NotificationObserver to
 // ensure that a termination of a renderer process gets propagated to the
 // active BrowserAccessibility instances calling into it. Each such instance
 // will upon such an event be set to an inactive state, failing calls from the
@@ skipping 17 matching lines @@
   // information. Unused LONG input parameters should be NULL, and the VARIANT
   // an empty, valid instance.
   bool RequestAccessibilityInfo(int iaccessible_id,
                                 int instance_id,
                                 int iaccessible_func_id,
                                 VARIANT var_id,
                                 LONG input1,
                                 LONG input2);
 
   // Wrapper function, for cleaner code.
-  const ViewHostMsg_Accessibility_Out_Params& response();
+  ViewHostMsg_Accessibility_Out_Params response();
 
   // Retrieves the parent HWND connected to the provided id.
   HWND parent_hwnd(int id);
 
   // Mutator, needed since constructor does not take any arguments, and to keep
   // instance accessor clean.
   int SetMembers(BrowserAccessibility* browser_acc,
                   HWND parent_hwnd,
                   RenderWidgetHost* render_widget_host);
 
@@ skipping 33 matching lines @@
   // Reverse mapping to track which RenderProcessHosts are active. If a
   // RenderProcessHost is found to be terminated, it should be removed from this
   // mapping, and the connected BrowserAccessibility ids/instances invalidated.
   RenderProcessHostMap render_process_host_map_;
 
   ViewHostMsg_Accessibility_Out_Params out_params_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
 #endif  // CHROME_BROWSER_BROWSER_ACCESSIBILITY_MANAGER_H_