Added quota_status_code.h/cc file to hold QuotaStatusCode enum and added function to convert enum t…

chrome/browser/extensions/api/sync_file_system/sync_file_system_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.
 
 #include "chrome/browser/extensions/api/sync_file_system/sync_file_system_api.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 170 matching lines @@
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
     BrowserThread::PostTask(
         BrowserThread::UI,
         FROM_HERE,
         Bind(&SyncFileSystemGetUsageAndQuotaFunction::DidGetUsageAndQuota, this,
              status, usage, quota));
     return;
   }
 
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  // TODO(calvinlo): Convert QuotaStatusCode to error string
-  // (http://crbug.com/156791).
   if (status != quota::kQuotaStatusOk) {
-    error_ = base::StringPrintf(kQuotaError, static_cast<int>(status));
+    error_ = QuotaStatusCodeToString(status);
     SendResponse(false);
     return;
   }
 
   api::sync_file_system::StorageInfo info;
   info.usage_bytes = usage;
   info.quota_bytes = quota;
   results_ = api::sync_file_system::GetUsageAndQuota::Results::Create(info);
   SendResponse(true);
 }
 
 }  // namespace extensions