Make it easier to create new IPC channel types (i.e. renderer/plugin). Inste...

chrome/browser/browser_accessibility_manager.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_manager.h"
 
 #include "chrome/browser/browser_accessibility.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/common/notification_service.h"
@@ skipping 98 matching lines @@
             routing_id(), in_params, &out_params_);
     // Necessary for the send to keep the UI responsive.
     msg->EnableMessagePumping();
     success = members->render_widget_host_->process()->channel()->
         SendWithTimeout(msg, kAccessibilityMessageTimeOut);
   }
 
   return success;
 }
 
-ViewHostMsg_Accessibility_Out_Params BrowserAccessibilityManager::response() {
+const ViewHostMsg_Accessibility_Out_Params&
+BrowserAccessibilityManager::response() {
   return out_params_;
 }
 
 HWND BrowserAccessibilityManager::parent_hwnd(int id) {
   // Retrieve the parent HWND connected to the requester's id.
   InstanceMap::iterator it = instance_map_.find(id);
 
   if (it == instance_map_.end()) {
     // Id not found.
     return NULL;
@@ skipping 35 matching lines @@
 
   // Delete entry also from InstanceMap.
   InstanceMap::iterator it2 = instance_map_.find(it->second->instance_id());
 
   if (it2 != instance_map_.end())
     instance_map_.erase(it2);
 
   // Only delete the first entry once it is no longer in use.
   render_process_host_map_.erase(it);
 }