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

chrome/test/page_cycler/page_cycler_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/basictypes.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
@@ skipping 232 matching lines @@
     ASSERT_TRUE(WaitUntilCookieValue(
         tab.get(), test_url, "__pc_done",
         TestTimeouts::huge_test_timeout_ms(), "1"));
 
     std::string cookie;
     ASSERT_TRUE(tab->GetCookieByName(test_url, "__pc_pages", &cookie));
     pages->assign(UTF8ToWide(cookie));
     ASSERT_FALSE(pages->empty());
 
     // Get the timing cookie value from the DOM automation.
-    std::wstring wcookie;
-    ASSERT_TRUE(tab->ExecuteAndExtractString(L"",
-          L"window.domAutomationController.send("
-          L"JSON.stringify(__get_timings()));",
-          &wcookie));
-    cookie = base::SysWideToNativeMB(wcookie);
+    string16 cookie16;
+    ASSERT_TRUE(tab->ExecuteAndExtractString(
+          string16(),
+          ASCIIToUTF16("window.domAutomationController.send("
+                       "JSON.stringify(__get_timings()));"),
+          &cookie16));
+    cookie = base::SysWideToNativeMB(UTF16ToWide(cookie16));
 
     // JSON.stringify() encapsulates the returned string in quotes, strip them.
     std::string::size_type start_idx = cookie.find("\"");
     std::string::size_type end_idx = cookie.find_last_of("\"");
     if (start_idx != std::string::npos &&
         end_idx != std::string::npos &&
         start_idx < end_idx) {
       cookie = cookie.substr(start_idx+1, end_idx-start_idx-1);
     }
 
@@ skipping 319 matching lines @@
 PAGE_CYCLER_DATABASE_TESTS("delete-transactions",
                            DeleteTransactions);
 PAGE_CYCLER_DATABASE_TESTS("pseudo-random-transactions",
                            PseudoRandomTransactions);
 #endif
 
 // Indexed DB tests.
 PAGE_CYCLER_IDB_TESTS("basic_insert", BasicInsert);
 
 }  // namespace