Remove some wstrings in test_shell.

webkit/tools/test_shell/test_shell_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 "webkit/tools/test_shell/test_shell.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <fontconfig/fontconfig.h>
 #include <gtk/gtk.h>
@@ skipping 471 matching lines @@
        iter != TestShell::windowList()->end(); iter++) {
     GtkWindow* window = *iter;
     TestShell* shell =
         static_cast<TestShell*>(g_object_get_data(G_OBJECT(window),
                                                   "test-shell"));
     shell->DumpBackForwardList(result);
   }
 }
 
 void TestShell::LoadURLForFrame(const GURL& url,
-                                const std::wstring& frame_name) {
+                                const string16& frame_name) {
   if (!url.is_valid())
     return;
 
   if (IsSVGTestURL(url)) {
     SizeToSVG();
   } else {
     // only resize back to the default when running tests
     if (layout_test_mode())
       SizeToDefault();
   }
 
   navigation_controller_->LoadEntry(
-      new TestNavigationEntry(-1, url, std::wstring(), frame_name));
+      new TestNavigationEntry(-1, url, frame_name));
 }
 
 bool TestShell::PromptForSaveFile(const wchar_t* prompt_title,
                                   FilePath* result) {
   GtkWidget* dialog;
   dialog = gtk_file_chooser_dialog_new(WideToUTF8(prompt_title).c_str(),
                                        GTK_WINDOW(m_mainWnd),
                                        GTK_FILE_CHOOSER_ACTION_SAVE,
                                        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                                        GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
@@ skipping 55 matching lines @@
   switch (resource_id) {
     case IDR_BROKENIMAGE:
       resource_id = IDR_BROKENIMAGE_TESTSHELL;
       break;
     case IDR_TEXTAREA_RESIZER:
       resource_id = IDR_TEXTAREA_RESIZER_TESTSHELL;
       break;
   }
   return TestShell::ResourceProvider(resource_id);
 }