Cleanup: Remove unneeded browser_thread.h includes in contents.

content/browser/loader/transfer_navigation_resource_throttle.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 "content/browser/loader/transfer_navigation_resource_throttle.h"
 
 #include "base/bind.h"
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/global_request_id.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/common/referrer.h"
 #include "net/url_request/url_request.h"
 
 namespace content {
 
 namespace {
@@ skipping 59 matching lines @@
               CURRENT_TAB,
               info->GetFrameID(),
               global_id));
 
       *defer = true;
     }
   }
 }
 
 }  // namespace content