Revert of bindings: Makes almost all attributes accessor-type properties.

Source/modules/cachestorage/ServiceWorkerCacheStorage.idl

Index: Source/modules/cachestorage/ServiceWorkerCacheStorage.idl
diff --git a/Source/modules/cachestorage/ServiceWorkerCacheStorage.idl b/Source/modules/cachestorage/ServiceWorkerCacheStorage.idl
deleted file mode 100644
index 46e5e5e6cfd3584a667d859a45af80fb02a75911..0000000000000000000000000000000000000000
--- a/Source/modules/cachestorage/ServiceWorkerCacheStorage.idl
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2015 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.
-
-// https://slightlyoff.github.io/ServiceWorker/spec/service_worker/#self-caches
-[
-    RuntimeEnabled=GlobalCacheStorage,
-    ImplementedAs=GlobalCacheStorage,
-] partial interface ServiceWorkerGlobalScope {
-    // Inheritance of [Unforgeable] attributes is not supported.  So we have to
-    // define the same unforgeable attributes in derived interfaces as well.
-    // See that {,Dedicated,Shared,Compositor,Service}WorkerGlobalScope redefine
-    // 'caches' attribute.
-    // Keep all the definitions consistent.
-    // TODO(yukishiino): Support inheritance of attributes defined on instance.
-    [Unforgeable, MeasureAs=GlobalCacheStorage, RuntimeEnabled=GlobalCacheStorage, RaisesException] readonly attribute CacheStorage caches;
-};