Change ExecuteJavaScript* helper functions in browser_test_utils.{h,cc}

chrome/browser/extensions/lazy_background_page_apitest.cc

 // Copyright (c) 2012 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 "base/command_line.h"
 #include "base/file_path.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/bookmarks/bookmark_utils.h"
@@ skipping 238 matching lines @@
   // Lazy Background Page still exists, because the extension started a request.
   ExtensionProcessManager* pm =
       extensions::ExtensionSystem::Get(browser()->profile())->process_manager();
   extensions::ExtensionHost* host =
       pm->GetBackgroundHostForExtension(last_loaded_extension_id_);
   ASSERT_TRUE(host);
 
   // Abort the request.
   bool result = false;
   EXPECT_TRUE(content::ExecuteJavaScriptAndExtractBool(
-      host->render_view_host(), std::wstring(), L"abortRequest()", &result));
+      host->render_view_host(), "", "abortRequest()", &result));
   EXPECT_TRUE(result);
   page_complete.Wait();
 
   // Lazy Background Page has been shut down.
   EXPECT_FALSE(pm->GetBackgroundHostForExtension(last_loaded_extension_id_));
 }
 
 // Tests that the lazy background page stays alive until all visible views are
 // closed.
 IN_PROC_BROWSER_TEST_F(LazyBackgroundPageApiTest, WaitForNTP) {
@@ skipping 171 matching lines @@
 
   EXPECT_TRUE(event_page_ready.WaitUntilSatisfied());
 
   page_ready.Reply("go");
 
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
 // TODO: background page with timer.
 // TODO: background page that interacts with popup.