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

chrome/test/url_fetch_test/url_fetch_test.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 "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
@@ skipping 67 matching lines @@
           tab.get(),
           UTF8ToWide(wait_js_frame_xpath),
           UTF8ToWide(wait_js_expr),
           wait_js_timeout_ms);
       ASSERT_TRUE(completed);
     }
     if (var_to_fetch) {
       std::string script = StringPrintf(
           "window.domAutomationController.send(%s);", var_to_fetch);
 
-      std::wstring value;
-      bool success = tab->ExecuteAndExtractString(L"", ASCIIToWide(script),
+      string16 value;
+      bool success = tab->ExecuteAndExtractString(string16(),
+                                                  ASCIIToUTF16(script),
                                                   &value);
       ASSERT_TRUE(success);
-      result->javascript_variable = WideToUTF8(value);
+      result->javascript_variable = UTF16ToUTF8(value);
     }
   }
 };
 
 bool WriteValueToFile(std::string value, const FilePath& path) {
   int retval = file_util::WriteFile(path, value.c_str(), value.length());
   return retval == static_cast<int>(value.length());
 }
 
 // To actually do anything useful, this test should have a url
@@ skipping 80 matching lines @@
 
   // Write out the JS Variable if requested
   FilePath jsvar_output_path = cmd_line->GetSwitchValuePath("jsvar_output");
   if (jsvar_output_path.value().size() > 0) {
     ASSERT_TRUE(WriteValueToFile(result.javascript_variable,
                                  jsvar_output_path));
   }
 }
 
 }  // namespace