Remove wstring from l10n_util. Part 2....

chrome/browser/ui/cocoa/location_bar/keyword_hint_decoration.h

 // Copyright (c) 2010 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_COCOA_LOCATION_BAR_KEYWORD_HINT_DECORATION_H_
 #define CHROME_BROWSER_UI_COCOA_LOCATION_BAR_KEYWORD_HINT_DECORATION_H_
 #pragma once
 
 #include <string>
 
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_decoration.h"
 
 #import "base/scoped_nsobject.h"
+#include "base/string16.h"
 
 // Draws the keyword hint, "Press [tab] to search <site>".
 
 class KeywordHintDecoration : public LocationBarDecoration {
  public:
   KeywordHintDecoration(NSFont* font);
   virtual ~KeywordHintDecoration();
 
   // Calculates the message to display and where to place the [tab]
   // image.
-  void SetKeyword(const std::wstring& keyword, bool is_extension_keyword);
+  void SetKeyword(const string16& keyword, bool is_extension_keyword);
 
   // Implement |LocationBarDecoration|.
   virtual void DrawInFrame(NSRect frame, NSView* control_view);
   virtual CGFloat GetWidthForSpace(CGFloat width);
 
  private:
   // Fetch and cache the [tab] image.
   NSImage* GetHintImage();
 
   // Attributes for drawing the hint string, such as font and color.
   scoped_nsobject<NSDictionary> attributes_;
 
   // Cache for the [tab] image.
   scoped_nsobject<NSImage> hint_image_;
 
   // The text to display to the left and right of the hint image.
   scoped_nsobject<NSString> hint_prefix_;
   scoped_nsobject<NSString> hint_suffix_;
 
   DISALLOW_COPY_AND_ASSIGN(KeywordHintDecoration);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_LOCATION_BAR_KEYWORD_HINT_DECORATION_H_