Introducing the WebServiceWorkerCacheStorage

public/platform/WebServiceWorkerCacheError.h

Index: public/platform/WebServiceWorkerCacheError.h
diff --git a/public/platform/WebServiceWorkerCacheError.h b/public/platform/WebServiceWorkerCacheError.h
new file mode 100644
index 0000000000000000000000000000000000000000..a7fc0fefa0f38335927b53788d46653bb1ce4192
--- /dev/null
+++ b/public/platform/WebServiceWorkerCacheError.h
@@ -0,0 +1,19 @@
+// Copyright 2014 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 WebServiceWorkerCacheError_h
+#define WebServiceWorkerCacheError_h
+
+namespace blink {
+
+enum WebServiceWorkerCacheError {
+    WebServiceWorkerCacheErrorNotImplemented,
+    WebServiceWorkerCacheErrorNotFound,
+    WebServiceWorkerCacheErrorExists,
+    WebServiceWorkerCacheErrorLast = WebServiceWorkerCacheErrorExists
+};
+
+} // namespace blink
+
+#endif // WebServiceWorkerCacheError_h