Move base/thread.h to base/threading, fix up callers to use the new location....

chrome/service/cloud_print/cloud_print_proxy_backend.h

 // 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.
 
 #ifndef CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_
 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_
 #pragma once
 
 #include <string>
 
-#include "base/thread.h"
+#include "base/threading/thread.h"
 #include "printing/backend/print_backend.h"
 
 class CloudPrintProxyService;
 class GURL;
 class DictionaryValue;
 
 // CloudPrintProxyFrontend is the interface used by CloudPrintProxyBackend to
 // communicate with the entity that created it and, presumably, is interested in
 // cloud print proxy related activity.
 // NOTE: All methods will be invoked by a CloudPrintProxyBackend on the same
@@ skipping 52 matching lines @@
   MessageLoop* const frontend_loop_;
   // The frontend which is responsible for displaying UI and updating Prefs
   CloudPrintProxyFrontend* frontend_;
 
   friend class base::RefCountedThreadSafe<CloudPrintProxyBackend::Core>;
 
   DISALLOW_COPY_AND_ASSIGN(CloudPrintProxyBackend);
 };
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_PROXY_BACKEND_H_