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

chrome/browser/ui/cocoa/applescript/tab_applescript.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/applescript/tab_applescript.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
 #import "base/scoped_nsobject.h"
 #include "base/sys_string_conversions.h"
@@ skipping 267 matching lines @@
   }
 }
 
 - (id)handlesExecuteJavascriptScriptCommand:(NSScriptCommand*)command {
   RenderViewHost* view = tabContents_->render_view_host();
   if (!view) {
     NOTREACHED();
     return nil;
   }
 
-  std::wstring script = base::SysNSStringToWide(
+  string16 script = base::SysNSStringToUTF16(
       [[command evaluatedArguments] objectForKey:@"javascript"]);
-  view->ExecuteJavascriptInWebFrame(L"", script);
+  view->ExecuteJavascriptInWebFrame(string16(), script);
 
   // TODO(Shreyas): Figure out a way to get the response back.
   return nil;
 }
 
 @end