wstring: convert all SetPageTitle APIs to use string16

chrome/browser/tab_contents/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_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
@@ skipping 35 matching lines @@
   // TabContentsView implementation --------------------------------------------
 
   virtual void CreateView(const gfx::Size& initial_size) OVERRIDE;
   virtual RenderWidgetHostView* CreateViewForWidget(
       RenderWidgetHost* render_widget_host) OVERRIDE;
 
   virtual gfx::NativeView GetNativeView() const OVERRIDE;
   virtual gfx::NativeView GetContentNativeView() const OVERRIDE;
   virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
   virtual void GetContainerBounds(gfx::Rect* out) const OVERRIDE;
-  virtual void SetPageTitle(const std::wstring& title) OVERRIDE;
+  virtual void SetPageTitle(const string16& title) OVERRIDE;
   virtual void OnTabCrashed(base::TerminationStatus status,
                             int error_code) OVERRIDE;
   virtual void SizeContents(const gfx::Size& size) OVERRIDE;
   virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
   virtual void Focus() OVERRIDE;
   virtual void SetInitialFocus() OVERRIDE;
   virtual void StoreFocus() OVERRIDE;
   virtual void RestoreFocus() OVERRIDE;
   virtual bool IsDoingDrag() const OVERRIDE;
   virtual void CancelDragAndCloseTab() OVERRIDE;
@@ skipping 96 matching lines @@
   scoped_ptr<TabContentsDragSource> drag_source_;
 
   // The size we want the tab contents view to be.  We keep this in a separate
   // variable because resizing in GTK+ is async.
   gfx::Size requested_size_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewGtk);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_