Remove wstring from RVH's run Javascript command....

chrome/browser/default_plugin_uitest.cc

 // Copyright (c) 2010 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/basictypes.h"
 #include "base/file_path.h"
+#include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/test/automation/tab_proxy.h"
 #include "chrome/test/ui/ui_test.h"
 #include "net/base/net_util.h"
 
 class DefaultPluginUITest : public UITest {
  public:
   DefaultPluginUITest() {
     dom_automation_enabled_ = true;
   }
 };
 
 #if defined(OS_WIN)
 #define MAYBE_DefaultPluginLoadTest DISABLED_DefaultPluginLoadTest
 #else
 #define MAYBE_DefaultPluginLoadTest DefaultPluginLoadTest
 #endif
 TEST_F(DefaultPluginUITest, MAYBE_DefaultPluginLoadTest) {
   // Open page with default plugin.
   FilePath test_file(test_data_directory_);
   test_file = test_file.AppendASCII("default_plugin.html");
   NavigateToURL(net::FilePathToFileURL(test_file));
 
   // Check that the default plugin was loaded. It executes a bit of javascript
   // in the HTML file which replaces the innerHTML of div |result| with "DONE".
   scoped_refptr<TabProxy> tab(GetActiveTab());
-  std::wstring out;
-  ASSERT_TRUE(tab->ExecuteAndExtractString(L"",
-      L"domAutomationController.send("
-      L"document.getElementById('result').innerHTML)", &out));
-  ASSERT_EQ(L"DONE", out);
+  string16 out;
+  ASSERT_TRUE(tab->ExecuteAndExtractString(string16(),
+      ASCIIToUTF16("domAutomationController.send("
+                   "document.getElementById('result').innerHTML)"), &out));
+  ASSERT_EQ(ASCIIToUTF16("DONE"), out);
 }