Change GetFontListAsync() to use the blocking pool.

content/browser/font_list_async.cc

 // Copyright (c) 2011 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/public/browser/font_list_async.h"
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "content/common/font_list.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace content {
 
 namespace {
 
 // Just executes the given callback with the parameter.
 void ReturnFontListToOriginalThread(
     const base::Callback<void(scoped_ptr<base::ListValue>)>& callback,
     scoped_ptr<base::ListValue> result) {
   callback.Run(result.Pass());
 }
 
-void GetFontListOnFileThread(
+void GetFontListInBlockingPool(
     BrowserThread::ID calling_thread_id,
     const base::Callback<void(scoped_ptr<base::ListValue>)>& callback) {
   scoped_ptr<base::ListValue> result(GetFontList_SlowBlocking());
   BrowserThread::PostTask(calling_thread_id, FROM_HERE,
       base::Bind(&ReturnFontListToOriginalThread, callback,
                  base::Passed(&result)));
 }
 
 }  // namespace
 
 void GetFontListAsync(
     const base::Callback<void(scoped_ptr<base::ListValue>)>& callback) {
   BrowserThread::ID id;
   bool well_known_thread = BrowserThread::GetCurrentThreadIdentifier(&id);
   DCHECK(well_known_thread)
       << "Can only call GetFontList from a well-known thread.";
 
-  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
-      base::Bind(&GetFontListOnFileThread, id, callback));
+  BrowserThread::PostBlockingPoolTask(FROM_HERE,
+      base::Bind(&GetFontListInBlockingPool, id, callback));
 }
 
 }  // namespace content