Enough hacks to make wstring printfs unneeded

chrome/browser/extensions/api/proxy/proxy_api.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.
 
 // Implementation of the Chrome Extensions Proxy Settings API.
 
 #include "chrome/browser/extensions/api/proxy/proxy_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/strings/stringprintf.h"
@@ skipping 49 matching lines @@
     void* profile,
     int line_number,
     const base::string16& error) {
   scoped_ptr<base::ListValue> args(new base::ListValue());
   base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetBoolean(keys::kProxyEventFatal, false);
   dict->SetString(keys::kProxyEventError,
                   net::ErrorToString(net::ERR_PAC_SCRIPT_FAILED));
   std::string error_msg;
   if (line_number != -1) {
-    base::SStringPrintf(&error_msg,
+    /*base::SStringPrintf(&error_msg,
                         "line: %d: %s",
-                        line_number, base::UTF16ToUTF8(error).c_str());
+                        line_number, base::UTF16ToUTF8(error).c_str());*/

[brucedawson, 2015/10/20 21:43:00]

Printing of UTF16ToUTF8 error string - seems very odd.

   } else {
     error_msg = base::UTF16ToUTF8(error);
   }
   dict->SetString(keys::kProxyEventDetails, error_msg);
   args->Append(dict);
 
   if (profile) {
     event_router->DispatchEventToRenderers(events::PROXY_ON_PROXY_ERROR,
                                            keys::kProxyEventOnProxyError,
                                            args.Pass(), profile, true, GURL());
@@ skipping 98 matching lines @@
       extension_pref->Set(keys::kProxyConfigRules, proxy_rules_dict);
       break;
     }
     case ProxyPrefs::kModeCount:
       NOTREACHED();
   }
   return extension_pref.release();
 }
 
 }  // namespace extensions