Use a direct include of strings headers in chrome/browser/i*/.

chrome/browser/importer/importer_list.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 CHROME_BROWSER_IMPORTER_IMPORTER_LIST_H_
 #define CHROME_BROWSER_IMPORTER_IMPORTER_LIST_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace importer {
 class ImporterListObserver;
 struct SourceProfile;
 }
 
 class ImporterList : public base::RefCountedThreadSafe<ImporterList> {
  public:
@@ skipping 65 matching lines @@
   // TODO(jhawkins): Remove once DetectSourceProfilesHack() is removed.
   bool is_observed_;
 
   // True if source profiles are loaded.
   bool source_profiles_loaded_;
 
   DISALLOW_COPY_AND_ASSIGN(ImporterList);
 };
 
 #endif  // CHROME_BROWSER_IMPORTER_IMPORTER_LIST_H_