Commiting the changes from my previous cl that are specific to not including ...

chrome/browser/browser_accessibility.cc

 // 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.
 
 #include "chrome/browser/browser_accessibility.h"
 
 #include "chrome/browser/browser_accessibility_manager.h"
 #include "chrome/browser/iaccessible_function_ids.h"
+#include "chrome/common/render_messages.h"
 
 BrowserAccessibility::BrowserAccessibility()
     : iaccessible_id_(-1),
       instance_active_(true) {
 }
 
 HRESULT BrowserAccessibility::accDoDefaultAction(VARIANT var_id) {
   if (!instance_active()) {
     // Instance no longer active, fail gracefully.
     // TODO(klink): Once we have MSAA events, change these fails for having
@@ skipping 520 matching lines @@
 }
 
 bool BrowserAccessibility::RequestAccessibilityInfo(int iaccessible_func_id,
                                                     VARIANT var_id, LONG input1,
                                                     LONG input2) {
   return BrowserAccessibilityManager::GetInstance()->RequestAccessibilityInfo(
       iaccessible_id(), instance_id(), iaccessible_func_id, var_id, input1,
       input2);
 }
 
-ViewHostMsg_Accessibility_Out_Params BrowserAccessibility::response() {
+const ViewHostMsg_Accessibility_Out_Params& BrowserAccessibility::response() {
   return BrowserAccessibilityManager::GetInstance()->response();
 }
 
 HWND BrowserAccessibility::parent_hwnd() {
   return BrowserAccessibilityManager::GetInstance()->parent_hwnd(instance_id());
 }