Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/service/cloud_print/cloud_print_proxy_backend.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/service/cloud_print/cloud_print_proxy_backend.h"
 
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 157 matching lines @@
     const ConnectorSettings& settings,
     const gaia::OAuthClientInfo& oauth_client_info,
     bool enable_job_poll)
     : core_thread_("Chrome_CloudPrintProxyCoreThread"),
       frontend_loop_(base::MessageLoop::current()),
       frontend_(frontend) {
   DCHECK(frontend_);
   core_ = new Core(this, settings, oauth_client_info, enable_job_poll);
 }
 
-CloudPrintProxyBackend::~CloudPrintProxyBackend() {
-  DCHECK(!core_);
-}
+CloudPrintProxyBackend::~CloudPrintProxyBackend() { DCHECK(!core_.get()); }
 
 bool CloudPrintProxyBackend::InitializeWithLsid(
     const std::string& lsid,
     const std::string& last_robot_refresh_token,
     const std::string& last_robot_email,
     const std::string& last_user_email) {
   if (!core_thread_.Start())
     return false;
   core_thread_.message_loop()->PostTask(
       FROM_HERE,
@@ skipping 379 matching lines @@
                             notification.channel.c_str()))
     HandlePrinterNotification(notification.data);
 }
 
 void CloudPrintProxyBackend::Core::OnPingResponse() {
   pending_xmpp_pings_ = 0;
   VLOG(1) << "CP_CONNECTOR: Ping response received.";
 }
 
 }  // namespace cloud_print