Revert 31875 to see whether it fixes reliability bot.

chrome/renderer/render_thread.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_RENDERER_RENDER_THREAD_H_
 #define CHROME_RENDERER_RENDER_THREAD_H_
 
 #include <string>
 #include <vector>
 
 #include "app/gfx/native_widget_types.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
 #include "base/task.h"
 #include "build/build_config.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/css_colors.h"
 #include "chrome/common/dom_storage_type.h"
 #include "chrome/renderer/renderer_histogram_snapshots.h"
 #include "chrome/renderer/visitedlink_slave.h"
-#include "ipc/ipc_platform_file.h"
 
 class AppCacheDispatcher;
 class DBMessageFilter;
 class DevToolsAgentFilter;
 class FilePath;
 class ListValue;
 class NullableString16;
 class RenderDnsMaster;
 class RendererHistogram;
 class RendererWebDatabaseObserver;
@@ skipping 162 matching lines @@
   // Send tcmalloc info to browser.
   void OnGetRendererTcmalloc();
   void OnGetV8HeapStats();
 
   void OnExtensionMessageInvoke(const std::string& function_name,
                                 const ListValue& args);
   void OnPurgeMemory();
   void OnPurgePluginListCache(bool reload_pages);
 
 #if defined(SPELLCHECKER_IN_RENDERER)
-  void OnInitSpellChecker(IPC::PlatformFileForTransit bdict_file,
+  void OnInitSpellChecker(const base::FileDescriptor& bdict_fd,
                           const std::vector<std::string>& custom_words,
                           const std::string& language,
                           bool auto_spell_correct);
   void OnSpellCheckWordAdded(const std::string& word);
   void OnSpellCheckEnableAutoSpellCorrect(bool enable);
 #endif
 
   // Gather usage statistics from the in-memory cache and inform our host.
   // These functions should be call periodically so that the host can make
   // decisions about how to allocation resources using current information.
@@ skipping 41 matching lines @@
   // The count of hidden RenderWidgets running through this thread.
   int hidden_widget_count_;
 
   // The current value of the idle notification timer delay.
   double idle_notification_delay_in_s_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThread);
 };
 
 #endif  // CHROME_RENDERER_RENDER_THREAD_H_