Convert implicit scoped_refptr constructor calls to explicit ones, part 1

chrome/browser/browser_thread.cc

 // Copyright (c) 2010 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_thread.h"
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 
 // Friendly names for the well-known threads.
@@ skipping 158 matching lines @@
     }
   }
 
   return false;
 }
 
 // static
 scoped_refptr<base::MessageLoopProxy>
 BrowserThread::GetMessageLoopProxyForThread(
     ID identifier) {
-  scoped_refptr<base::MessageLoopProxy> proxy =
-      new BrowserThreadMessageLoopProxy(identifier);
+  scoped_refptr<base::MessageLoopProxy> proxy(
+      new BrowserThreadMessageLoopProxy(identifier));
   return proxy;
 }
 
 // static
 bool BrowserThread::PostTaskHelper(
     ID identifier,
     const tracked_objects::Location& from_here,
     Task* task,
     int64 delay_ms,
     bool nestable) {
@@ skipping 22 matching lines @@
     }
   } else {
     delete task;
   }
 
   if (!guaranteed_to_outlive_target_thread)
     lock_.Release();
 
   return !!message_loop;
 }