Offload disk accesses to WorkerPool in ExtensionProtocolHandler

content/browser/tcmalloc_internals_request_job.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/tcmalloc_internals_request_job.h"
 
 #include "base/allocator/allocator_extension.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/process_type.h"
+#include "net/base/net_errors.h"
 
 namespace content {
 
 // static
 AboutTcmallocOutputs* AboutTcmallocOutputs::GetInstance() {
   return Singleton<AboutTcmallocOutputs>::get();
 }
 
 AboutTcmallocOutputs::AboutTcmallocOutputs() {}
 
@@ skipping 71 matching lines @@
 
   for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
     iter.Send(new ChildProcessMsg_GetTcmallocStats);
   }
 
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
       &RequestTcmallocStatsFromChildRenderProcesses));
 }
 #endif
 
-bool TcmallocInternalsRequestJob::GetData(std::string* mime_type,
-                                          std::string* charset,
-                                          std::string* data) const {
+int TcmallocInternalsRequestJob::GetData(
+    std::string* mime_type,
+    std::string* charset,
+    std::string* data,
+    const net::CompletionCallback& callback) const {
   mime_type->assign("text/html");
   charset->assign("UTF8");
 
   data->clear();
 #if defined(USE_TCMALLOC)
   AboutTcmalloc(data);
 #endif
-  return true;
+  return net::OK;
 }
 
 } // namespace content