Use a direct include of strings headers in ui/, part 3.

ui/views/controls/tabbed_pane/tabbed_pane.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 UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_
 #define UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "ui/views/view.h"
 
 namespace views {
 
 class Tab;
 class TabbedPaneListener;
 class TabStrip;
 
 // TabbedPane is a view that shows tabs. When the user clicks on a tab, the
 // associated view is displayed.
@@ skipping 58 matching lines @@
 
   // The selected tab index or -1 if invalid.
   int selected_tab_index_;
 
   DISALLOW_COPY_AND_ASSIGN(TabbedPane);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_TABBED_PANE_TABBED_PANE_H_