Use a direct include of strings headers in components/, part 1.

components/autofill/browser/autocomplete_history_manager_unittest.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 <vector>
 
 #include "base/memory/ref_counted.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/webdata/web_data_service_factory.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/autofill/browser/autocomplete_history_manager.h"
 #include "components/autofill/browser/autofill_external_delegate.h"
 #include "components/autofill/browser/autofill_manager.h"
 #include "components/autofill/browser/test_autofill_manager_delegate.h"
@@ skipping 230 matching lines @@
 
   MockAutofillExternalDelegate external_delegate(web_contents());
   autocomplete_history_manager.SetExternalDelegate(&external_delegate);
 
   // Should trigger a call to OnSuggestionsReturned, verified by the mock.
   EXPECT_CALL(external_delegate, OnSuggestionsReturned(_, _, _, _, _));
   autocomplete_history_manager.SendSuggestions(NULL);
 }
 
 }  // namespace autofill