Cleanup: IWYU for base/gtest_prod_util.h.

chrome/browser/ui/libgtk2ui/x11_input_method_context_impl_gtk2.h

 // Copyright 2013 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_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_
 #define CHROME_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/event_types.h"
-#include "base/gtest_prod_util.h"
 #include "base/strings/string16.h"
 #include "ui/base/glib/glib_integers.h"
 #include "ui/base/glib/glib_signal.h"
 #include "ui/base/ime/linux/linux_input_method_context.h"
 #include "ui/gfx/geometry/rect.h"
 
 typedef union _GdkEvent GdkEvent;
 typedef struct _GtkIMContext GtkIMContext;
 
 namespace libgtk2ui {
@@ skipping 62 matching lines @@
   std::vector<int> meta_keycodes_;
   std::vector<int> super_keycodes_;
   std::vector<int> hyper_keycodes_;
 
   DISALLOW_COPY_AND_ASSIGN(X11InputMethodContextImplGtk2);
 };
 
 }  // namespace libgtk2ui
 
 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_X11_INPUT_METHOD_CONTEXT_IMPL_GTK2_H_