Use a direct include of strings headers in chrome/browser/r*-s*/.

chrome/browser/sessions/session_types.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_SESSIONS_SESSION_TYPES_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/time.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "components/sessions/serialized_navigation_entry.h"
 #include "content/public/common/page_transition_types.h"
 #include "googleurl/src/gurl.h"
 #include "sync/protocol/session_specifics.pb.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/gfx/rect.h"
 
 namespace content {
@@ skipping 121 matching lines @@
   // Is the window maximized, minimized, or normal?
   ui::WindowShowState show_state;
 
   std::string app_name;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SessionWindow);
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_