Remove stray platform_file.h from content

content/renderer/renderer_webkitplatformsupport_impl.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/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/numerics/safe_conversions.h"
-#include "base/platform_file.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/blink_glue.h"
 #include "content/child/database_util.h"
 #include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/indexed_db/webidbfactory_impl.h"
 #include "content/child/npapi/npobject_util.h"
 #include "content/child/quota_dispatcher.h"
 #include "content/child/quota_message_filter.h"
 #include "content/child/simple_webmimeregistry_impl.h"
@@ skipping 1151 matching lines @@
     return;
   QuotaDispatcher::ThreadSpecificInstance(
       thread_safe_sender_.get(),
       quota_message_filter_.get())->QueryStorageUsageAndQuota(
           storage_partition,
           static_cast<quota::StorageType>(type),
           QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 }  // namespace content