intents: Change default_service_url() to return a const-ref.

chrome/browser/ui/intents/web_intents_model.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 "chrome/browser/ui/intents/web_intents_model.h"
+
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/browser/intents/default_web_intent_service.h"
 #include "chrome/browser/intents/web_intents_registry.h"
 
 WebIntentsTreeNode::WebIntentsTreeNode()
   : ui::TreeNode<WebIntentsTreeNode>(string16()),
     type_(TYPE_ROOT) {}
 
 WebIntentsTreeNode::WebIntentsTreeNode(const string16& title)
   : ui::TreeNode<WebIntentsTreeNode>(title),
     type_(TYPE_ORIGIN) {}
 
@@ skipping 145 matching lines @@
 
 void WebIntentsModel::NotifyObserverEndBatch() {
   // Only notify the observers if this is the outermost call to EndBatch() if
   // called in a nested manner.
   if (--batch_update_ == 0) {
     FOR_EACH_OBSERVER(Observer,
                       intents_observer_list_,
                       TreeModelEndBatch(this));
   }
 }