wstring: convert all SetPageTitle APIs to use string16

webkit/tools/test_shell/test_webview_delegate.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.
 
 // TestWebViewDelegate class:
 // This class implements the WebViewDelegate methods for the test shell.  One
 // instance is owned by each TestShell.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_
@@ skipping 314 matching lines @@
   }
 
   MockSpellCheck* mock_spellcheck() {
     return &mock_spellcheck_;
   }
 
  private:
 
   // Called the title of the page changes.
   // Can be used to update the title of the window.
-  void SetPageTitle(const std::wstring& title);
+  void SetPageTitle(const string16& title);
 
   // Called when the URL of the page changes.
   // Extracts the URL and forwards on to SetAddressBarURL().
   void UpdateAddressBar(WebKit::WebView* webView);
 
   // Called when the URL of the page changes.
   // Should be used to update the text of the URL bar.
   void SetAddressBarURL(const GURL& url);
 
   // Show a JavaScript alert as a popup message.
@@ skipping 99 matching lines @@
   std::string edit_command_name_;
   std::string edit_command_value_;
 
   // The mock spellchecker used in TestWebViewDelegate::spellCheck().
   MockSpellCheck mock_spellcheck_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWebViewDelegate);
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_