Cleanup: IWYU for base/gtest_prod_util.h.

components/omnibox/browser/history_quick_provider.h

 // 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.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_HISTORY_QUICK_PROVIDER_H_
 #define COMPONENTS_OMNIBOX_BROWSER_HISTORY_QUICK_PROVIDER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/gtest_prod_util.h"
 #include "components/history/core/browser/history_types.h"
 #include "components/omnibox/browser/autocomplete_input.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/omnibox/browser/history_provider.h"
 #include "components/omnibox/browser/in_memory_url_index.h"
 
 struct ScoredHistoryMatch;
 
 // This class is an autocomplete provider (a pseudo-internal component of
 // the history system) which quickly (and synchronously) provides matching
@@ skipping 33 matching lines @@
   std::string languages_;
   InMemoryURLIndex* in_memory_url_index_;  // Not owned by this class.
 
   // This provider is disabled when true.
   static bool disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryQuickProvider);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_HISTORY_QUICK_PROVIDER_H_