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

components/autofill/browser/autofill_metrics_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/memory/scoped_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time.h"
 #include "chrome/browser/autofill/autofill_cc_infobar_delegate.h"
 #include "chrome/browser/autofill/personal_data_manager_factory.h"
 #include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/autofill/browser/autocheckout_page_meta_data.h"
 #include "components/autofill/browser/autofill_common_test.h"
 #include "components/autofill/browser/autofill_manager.h"
@@ skipping 1526 matching lines @@
         TimeTicks::FromInternalValue(5));
     autofill_manager_->OnTextFieldDidChange(form, form.fields.front(),
                                             TimeTicks::FromInternalValue(3));
     autofill_manager_->FormSubmitted(form, TimeTicks::FromInternalValue(17));
     autofill_manager_->Reset();
     Mock::VerifyAndClearExpectations(autofill_manager_->metric_logger());
   }
 }
 
 }  // namespace autofill