wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/native_tab_contents_view_views.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_views.h"
 
 #include "chrome/browser/renderer_host/render_widget_host_view_views.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_delegate.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
@@ skipping 41 matching lines @@
   view->InitAsChild();
   // TODO(anicolao): implement drag'n'drop hooks if needed
   return view;
 }
 
 gfx::NativeWindow NativeTabContentsViewViews::GetTopLevelNativeWindow() const {
   NOTIMPLEMENTED();
   return NULL;
 }
 
-void NativeTabContentsViewViews::SetPageTitle(const std::wstring& title) {
+void NativeTabContentsViewViews::SetPageTitle(const string16& title) {
   SetWindowTitle(title);
 }
 
 void NativeTabContentsViewViews::StartDragging(
     const WebDropData& drop_data,
     WebKit::WebDragOperationsMask ops,
     const SkBitmap& image,
     const gfx::Point& image_offset) {
   NOTIMPLEMENTED();
 }
 
 void NativeTabContentsViewViews::CancelDrag() {
   NOTIMPLEMENTED();
 }
 
 bool NativeTabContentsViewViews::IsDoingDrag() const {
   NOTIMPLEMENTED();
   return false;
 }
 
 void NativeTabContentsViewViews::SetDragCursor(
     WebKit::WebDragOperation operation) {
   NOTIMPLEMENTED();
 }
 
 views::NativeWidget* NativeTabContentsViewViews::AsNativeWidget() {
   return this;
 }