Get IME's to work in Chrome OS mode on Windows 7.

win8/metro_driver/metro_driver_win7.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 "stdafx.h"
 #include <corewindow.h>
 #include <shobjidl.h>
 
 #include "base/logging.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
@@ skipping 1211 matching lines @@
     return S_OK;
   }
 
  private:
   mswr::ComPtr<winapp::Core::IFrameworkView> app_view_;
   mswr::ComPtr<CoreApplicationViewEmulation> view_emulation_;
 };
 
 
 mswr::ComPtr<winapp::Core::ICoreApplication> InitWindows7() {
-  HRESULT hr = ::CoInitializeEx(NULL, COINIT_MULTITHREADED);
+  HRESULT hr = ::CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
   if (FAILED(hr))
     CHECK(false);
   return mswr::Make<CoreApplicationWin7Emulation>();
 }