wstring: convert all SetPageTitle APIs to use string16

webkit/tools/test_shell/test_webview_delegate.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.
 
 // This file contains the implementation of TestWebViewDelegate, which serves
 // as the WebViewDelegate for the TestShellWebHost.  The host is expected to
 // have initialized a MessageLoop before these methods are called.
 
 #include "webkit/tools/test_shell/test_webview_delegate.h"
 
@@ skipping 817 matching lines @@
     WebFrame* frame, bool is_new_navigation) {
   UpdateForCommittedLoad(frame, is_new_navigation);
 }
 
 void TestWebViewDelegate::didClearWindowObject(WebFrame* frame) {
   shell_->BindJSObjectsToWindow(frame);
 }
 
 void TestWebViewDelegate::didReceiveTitle(
     WebFrame* frame, const WebString& title, WebTextDirection direction) {
-  std::wstring wtitle = UTF16ToWideHack(title);
-
-  SetPageTitle(wtitle);
+  SetPageTitle(title);
 }
 
 void TestWebViewDelegate::didFinishDocumentLoad(WebFrame* frame) {
   unsigned pending_unload_events = frame->unloadListenerCount();
   if (pending_unload_events) {
     printf("%S - has %u onunload handler(s)\n",
         GetFrameDescription(frame).c_str(), pending_unload_events);
   }
 }
 
@@ skipping 307 matching lines @@
 }
 
 void TestWebViewDelegate::set_fake_window_rect(const WebRect& rect) {
   fake_rect_ = rect;
   using_fake_rect_ = true;
 }
 
 WebRect TestWebViewDelegate::fake_window_rect() {
   return fake_rect_;
 }