Unify the three places that patch font loading for PDFium on Windows.

content/child/npapi/plugin_url_fetcher.cc

 // Copyright (c) 2013 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/child/npapi/plugin_url_fetcher.h"
 
 #include "base/memory/scoped_ptr.h"
-#include "content/child/child_thread.h"
+#include "content/child/child_thread_impl.h"
 #include "content/child/multipart_response_delegate.h"
 #include "content/child/npapi/plugin_host.h"
 #include "content/child/npapi/plugin_instance.h"
 #include "content/child/npapi/plugin_stream_url.h"
 #include "content/child/npapi/webplugin.h"
 #include "content/child/npapi/webplugin_resource_client.h"
 #include "content/child/plugin_messages.h"
 #include "content/child/request_extra_data.h"
 #include "content/child/request_info.h"
 #include "content/child/resource_dispatcher.h"
@@ skipping 120 matching lines @@
     if (!content_type_found) {
       if (!request_info.headers.empty())
         request_info.headers += "\r\n";
       request_info.headers += "Content-Type: application/x-www-form-urlencoded";
     }
   } else {
     if (!range.empty())
       request_info.headers = std::string("Range: ") + range;
   }
 
-  bridge_.reset(ChildThread::current()->resource_dispatcher()->CreateBridge(
+  bridge_.reset(ChildThreadImpl::current()->resource_dispatcher()->CreateBridge(
       request_info));
   if (!body.empty()) {
     scoped_refptr<ResourceRequestBody> request_body =
         new ResourceRequestBody;
     request_body->AppendBytes(&body[0], body.size());
     bridge_->SetRequestBody(request_body.get());
   }
 
   bridge_->Start(this);
 
@@ skipping 208 matching lines @@
   }
 
   if (error_code == net::OK) {
     plugin_stream_->DidFinishLoading(resource_id_);
   } else {
     plugin_stream_->DidFail(resource_id_);
   }
 }
 
 }  // namespace content