Use a direct include of strings headers in chrome/browser/ui/b*-p*/.

chrome/browser/ui/omnibox/location_bar_util.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_UI_OMNIBOX_LOCATION_BAR_UTIL_H_
 #define CHROME_BROWSER_UI_OMNIBOX_LOCATION_BAR_UTIL_H_
 
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 class ExtensionAction;
 
 namespace gfx {
 class Canvas;
 class Rect;
 }
 
 namespace location_bar_util {
@@ skipping 11 matching lines @@
 void PaintExtensionActionBackground(const ExtensionAction& action,
                                     int tab_id,
                                     gfx::Canvas* canvas,
                                     const gfx::Rect& bounds,
                                     SkColor text_color,
                                     SkColor background_color);
 
 }  // namespace location_bar_util
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_LOCATION_BAR_UTIL_H_