wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.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_gtk.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/tab_contents/web_drag_dest_gtk.h"
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 #include "chrome/browser/ui/gtk/tab_contents_drag_source.h"
@@ skipping 129 matching lines @@
                 0);
   return view;
 }
 
 gfx::NativeWindow NativeTabContentsViewGtk::GetTopLevelNativeWindow() const {
   GtkWidget* window = gtk_widget_get_ancestor(GetWidget()->GetNativeView(),
                                               GTK_TYPE_WINDOW);
   return window ? GTK_WINDOW(window) : NULL;
 }
 
-void NativeTabContentsViewGtk::SetPageTitle(const std::wstring& title) {
+void NativeTabContentsViewGtk::SetPageTitle(const string16& title) {
   // Set the window name to include the page title so it's easier to spot
   // when debugging (e.g. via xwininfo -tree).
   if (GDK_IS_WINDOW(GetNativeView()->window))
-    gdk_window_set_title(GetNativeView()->window, WideToUTF8(title).c_str());
+    gdk_window_set_title(GetNativeView()->window, UTF16ToUTF8(title).c_str());
 }
 
 void NativeTabContentsViewGtk::StartDragging(const WebDropData& drop_data,
                                              WebKit::WebDragOperationsMask ops,
                                              const SkBitmap& image,
                                              const gfx::Point& image_offset) {
   drag_source_->StartDragging(drop_data, ops, &last_mouse_down_,
                               image, image_offset);
 }
 
@@ skipping 95 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 NativeTabContentsViewGtk(delegate);
 }