Reverting this CL to see if this fixes chrome frame unit test failures....

chrome_frame/delete_chrome_history.h

Index: chrome_frame/delete_chrome_history.h
===================================================================
--- chrome_frame/delete_chrome_history.h	(revision 42690)
+++ chrome_frame/delete_chrome_history.h	(working copy)
@@ -1,65 +0,0 @@
-// Copyright (c) 2010 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_FRAME_DELETE_CHROME_HISTORY_H_
-#define CHROME_FRAME_DELETE_CHROME_HISTORY_H_
-
-#include <atlbase.h>
-#include <atlwin.h>
-#include <atlcom.h>
-
-#include <deletebrowsinghistory.h>
-
-#include "base/message_loop.h"
-#include "chrome_frame/bho.h"
-#include "chrome_frame/chrome_frame_plugin.h"
-#include "grit/chrome_frame_resources.h"
-
-// Include without path to make GYP build see it.
-#include "chrome_tab.h"  // NOLINT
-
-class Bho;
-
-// DeleteChromeHistory: Implements IDeleteBrowsingHistory and
-// pumps cache clearing operations over automation. Blocks the UI
-// thread while operating.  You have been warned.
-class ATL_NO_VTABLE DeleteChromeHistory
-    : public CComTearOffObjectBase<Bho, CComSingleThreadModel>,
-      public CWindowImpl<DeleteChromeHistory>,
-      public ChromeFramePlugin<DeleteChromeHistory>,
-      public IDeleteBrowsingHistory {
- public:
-  DeleteChromeHistory();
-  ~DeleteChromeHistory();
-
-  HRESULT FinalConstruct();
-
-DECLARE_CLASSFACTORY_SINGLETON(DeleteChromeHistory)
-
-BEGIN_COM_MAP(DeleteChromeHistory)
-  COM_INTERFACE_ENTRY(IDeleteBrowsingHistory)
-END_COM_MAP()
-
-BEGIN_MSG_MAP(DeleteChromeHistory)
-  CHAIN_MSG_MAP(ChromeFramePlugin<DeleteChromeHistory>)
-END_MSG_MAP()
-
-  // IDeleteBrowsingHistory methods
-  STDMETHOD(DeleteBrowsingHistory)(DWORD flags);
-
- protected:
-  // ChromeFrameDelegate overrides
-  virtual void OnAutomationServerReady();
-  virtual void OnAutomationServerLaunchFailed(
-      AutomationLaunchResult reason, const std::string& server_version);
-
-  virtual void GetProfilePath(const std::wstring& profile_name,
-                              FilePath* profile_path);
-
- private:
-  unsigned long remove_mask_;
-  MessageLoopForUI loop_;
-};
-
-#endif  // CHROME_FRAME_DELETE_CHROME_HISTORY_H_