wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/native_tab_contents_view_win.cc

 // 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.
 
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_win.h"
 
 #include "chrome/browser/tab_contents/web_drop_target_win.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_delegate.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_views.h"
 #include "chrome/browser/ui/views/tab_contents/tab_contents_drag_win.h"
@@ skipping 111 matching lines @@
       new RenderWidgetHostViewWin(render_widget_host);
   view->CreateWnd(GetNativeView());
   view->ShowWindow(SW_SHOW);
   return view;
 }
 
 gfx::NativeWindow NativeTabContentsViewWin::GetTopLevelNativeWindow() const {
   return ::GetAncestor(GetNativeView(), GA_ROOT);
 }
 
-void NativeTabContentsViewWin::SetPageTitle(const std::wstring& title) {
+void NativeTabContentsViewWin::SetPageTitle(const string16& title) {
   // It's possible to get this after the hwnd has been destroyed.
   if (GetNativeView())
     ::SetWindowText(GetNativeView(), title.c_str());
 }
 
 void NativeTabContentsViewWin::StartDragging(const WebDropData& drop_data,
                                              WebKit::WebDragOperationsMask ops,
                                              const SkBitmap& image,
                                              const gfx::Point& image_offset) {
   drag_handler_ = new TabContentsDragWin(this);
@@ skipping 197 matching lines @@
 // NativeTabContentsView, public:
 
 // static
 NativeTabContentsView* NativeTabContentsView::CreateNativeTabContentsView(
     internal::NativeTabContentsViewDelegate* delegate) {
   if (views::Widget::IsPureViews() &&
       views::ViewsDelegate::views_delegate->GetDefaultParentView())
     return new NativeTabContentsViewViews(delegate);
   return new NativeTabContentsViewWin(delegate);
 }