wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.h

 // Copyright (c) 2011 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_VIEWS_TAB_CONTENTS_NATIVE_TAB_CONTENTS_VIEW_GTK_H_
 #define CHROME_BROWSER_UI_VIEWS_TAB_CONTENTS_NATIVE_TAB_CONTENTS_VIEW_GTK_H_
 #pragma once
 
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view.h"
 #include "views/widget/native_widget_gtk.h"
@@ skipping 16 matching lines @@
   void RemoveConstrainedWindow(ConstrainedWindowGtk* constrained_window);
 
 
  private:
   // Overridden from NativeTabContentsView:
   virtual void InitNativeTabContentsView() OVERRIDE;
   virtual void Unparent() OVERRIDE;
   virtual RenderWidgetHostView* CreateRenderWidgetHostView(
       RenderWidgetHost* render_widget_host) OVERRIDE;
   virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
-  virtual void SetPageTitle(const std::wstring& title) OVERRIDE;
+  virtual void SetPageTitle(const string16& title) OVERRIDE;
   virtual void StartDragging(const WebDropData& drop_data,
                              WebKit::WebDragOperationsMask ops,
                              const SkBitmap& image,
                              const gfx::Point& image_offset) OVERRIDE;
   virtual void CancelDrag() OVERRIDE;
   virtual bool IsDoingDrag() const OVERRIDE;
   virtual void SetDragCursor(WebKit::WebDragOperation operation) OVERRIDE;
   virtual views::NativeWidget* AsNativeWidget() OVERRIDE;
 
   // Overridden from views::NativeWidgetGtk:
@@ skipping 30 matching lines @@
 
   // Each individual UI for constrained dialogs currently displayed. The
   // objects in this vector are owned by the TabContents, not the view.
   std::vector<ConstrainedWindowGtk*> constrained_windows_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeTabContentsViewGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TAB_CONTENTS_NATIVE_TAB_CONTENTS_VIEW_GTK_H_