Use a direct include of strings headers in ui/, part 2.

ui/base/text/text_elider.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.
 //
 // This file defines utility functions for eliding and formatting UI text.
 
 #ifndef UI_BASE_TEXT_TEXT_ELIDER_H_
 #define UI_BASE_TEXT_TEXT_ELIDER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "third_party/icu/public/common/unicode/uchar.h"
 #include "third_party/icu/public/i18n/unicode/coll.h"
 #include "ui/base/ui_export.h"
 #include "ui/gfx/font.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
 }
@@ skipping 171 matching lines @@
 // Truncates the string to length characters. This breaks the string at
 // the first word break before length, adding the horizontal ellipsis
 // character (unicode character 0x2026) to render ...
 // The supplied string is returned if the string has length characters or
 // less.
 UI_EXPORT string16 TruncateString(const string16& string, size_t length);
 
 }  // namespace ui
 
 #endif  // UI_BASE_TEXT_TEXT_ELIDER_H_