[BlobAsync] Disk support for blob storage

storage/common/blob_storage/blob_storage_constants.cc

Index: storage/common/blob_storage/blob_storage_constants.cc
diff --git a/storage/common/blob_storage/blob_storage_constants.cc b/storage/common/blob_storage/blob_storage_constants.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a9abd32e97f100325ea92e91b9621e9a009ce22c
--- /dev/null
+++ b/storage/common/blob_storage/blob_storage_constants.cc
@@ -0,0 +1,17 @@
+// Copyright 2016 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 "storage/common/blob_storage/blob_storage_constants.h"
+
+namespace storage {
+
+bool BlobStatusIsError(BlobStatus status) {
+  return static_cast<int>(status) < static_cast<int>(BlobStatus::DONE);
+}
+
+bool BlobStatusIsBadIPC(BlobStatus status) {
+  return status == BlobStatus::INVALID_CONSTRUCTION_ARGUMENTS;
+}
+
+}  // namespace storage