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

net/proxy/proxy_config_service_linux.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 "net/proxy/proxy_config_service_linux.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #if defined(USE_GCONF)
 #include <gconf/gconf-client.h>
@@ skipping 956 matching lines @@
                                          base::MessageLoopForIO::WATCH_READ,
                                          &inotify_watcher_,
                                          this))
       return false;
     // Simulate a change to avoid possibly losing updates before this point.
     OnChangeNotification();
     return true;
   }
 
   virtual base::SingleThreadTaskRunner* GetNotificationTaskRunner() OVERRIDE {
-    return file_loop_ ? file_loop_->message_loop_proxy() : NULL;
+    return file_loop_ ? file_loop_->message_loop_proxy().get() : NULL;
   }
 
   // Implement base::MessagePumpLibevent::Watcher.
   virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {
     DCHECK_EQ(fd, inotify_fd_);
     DCHECK(base::MessageLoop::current() == file_loop_);
     OnChangeNotification();
   }
   virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {
     NOTREACHED();
@@ skipping 769 matching lines @@
 void ProxyConfigServiceLinux::RemoveObserver(Observer* observer) {
   delegate_->RemoveObserver(observer);
 }
 
 ProxyConfigService::ConfigAvailability
     ProxyConfigServiceLinux::GetLatestProxyConfig(ProxyConfig* config) {
   return delegate_->GetLatestProxyConfig(config);
 }
 
 }  // namespace net