Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

base/files/file_path_watcher_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 "base/files/file_path_watcher.h"
 
 #include <errno.h>
 #include <string.h>
 #include <sys/inotify.h>
 #include <sys/ioctl.h>
@@ skipping 352 matching lines @@
                                 bool recursive,
                                 const FilePathWatcher::Callback& callback) {
   DCHECK(target_.empty());
   DCHECK(MessageLoopForIO::current());
   if (recursive) {
     // Recursive watch is not supported on this platform.
     NOTIMPLEMENTED();
     return false;
   }
 
-  set_message_loop(base::MessageLoopProxy::current());
+  set_message_loop(base::MessageLoopProxy::current().get());
   callback_ = callback;
   target_ = path;
   MessageLoop::current()->AddDestructionObserver(this);
 
   std::vector<FilePath::StringType> comps;
   target_.GetComponents(&comps);
   DCHECK(!comps.empty());
   std::vector<FilePath::StringType>::const_iterator comp = comps.begin();
   for (++comp; comp != comps.end(); ++comp)
     watches_.push_back(WatchEntry(InotifyReader::kInvalidWatch, *comp));
@@ skipping 94 matching lines @@
   return true;
 }
 
 }  // namespace
 
 FilePathWatcher::FilePathWatcher() {
   impl_ = new FilePathWatcherImpl();
 }
 
 }  // namespace base