Move Cache Storage API implementation to modules/cachestorage

Source/modules/serviceworkers/CacheStorage.idl

Index: Source/modules/serviceworkers/CacheStorage.idl
diff --git a/Source/modules/serviceworkers/CacheStorage.idl b/Source/modules/serviceworkers/CacheStorage.idl
deleted file mode 100644
index 5cee9d7aafa4a52b035e956e43eb82a0e705fccc..0000000000000000000000000000000000000000
--- a/Source/modules/serviceworkers/CacheStorage.idl
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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.
-
-// See https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#cache-storage
-[
-    GarbageCollected,
-    Exposed=(Window,Worker),
-    RuntimeEnabled=ServiceWorkerCache,
-    TypeChecking=Interface,
-] interface CacheStorage {
-  [CallWith=ScriptState] Promise<boolean> has(DOMString cacheName);
-  [CallWith=ScriptState] Promise<Cache> open(DOMString cacheName);
-  [CallWith=ScriptState, ImplementedAs=deleteFunction] Promise<boolean> delete(DOMString cacheName);
-  [CallWith=ScriptState] Promise<sequence<DOMString>> keys();
-  [CallWith=ScriptState, RaisesException] Promise<Response> match(RequestInfo request, optional CacheQueryOptions options);
-};