Allow RequestOSFileHandle if an app has unlimited storage

webkit/quota/quota_types.h

 // 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.
 
 #ifndef WEBKIT_QUOTA_QUOTA_TYPES_H_
 #define WEBKIT_QUOTA_QUOTA_TYPES_H_
 
 #include <deque>
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "webkit/quota/quota_status_code.h"
 
 class GURL;
 
 namespace quota {
 
 enum StorageType {
   kStorageTypeTemporary,
   kStorageTypePersistent,
   kStorageTypeSyncable,
   kStorageTypeUnknown,
 };
 
+enum QuotaLimitType {
+  kQuotaLimitTypeUnknown,
+  kQuotaLimitTypeLimited,
+  kQuotaLimitTypeUnlimited,
+};
+
 struct UsageInfo;
 typedef std::vector<UsageInfo> UsageInfoEntries;
 
 // Common callback types that are used throughout in the quota module.
 typedef base::Callback<void(StorageType status,
                             int64 usage,
                             int64 unlimited_usage)> GlobalUsageCallback;
 typedef base::Callback<void(QuotaStatusCode status, int64 quota)> QuotaCallback;
 typedef base::Callback<void(int64 usage)> UsageCallback;
 typedef base::Callback<void(QuotaStatusCode, int64)> AvailableSpaceCallback;
@@ skipping 120 matching lines @@
     this->callback_map_.erase(key);
   }
 };
 
 typedef CallbackQueueMap1<UsageCallback, std::string, int64>
     HostUsageCallbackMap;
 
 }  // namespace quota
 
 #endif  // WEBKIT_QUOTA_QUOTA_TYPES_H_