Introducing the WebServiceWorkerCacheStorage

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
index 07b23386867fb95bf125e5f766997ae81a0c63d6..4284405d4f6cf53f2c6100b5c32e5a6c5dab8660 100644
--- a/Source/modules/serviceworkers/CacheStorage.idl
+++ b/Source/modules/serviceworkers/CacheStorage.idl
@@ -8,11 +8,12 @@
     Exposed=ServiceWorker,
     RuntimeEnabled=ServiceWorker,
 ] interface CacheStorage {
-  [CallWith=ScriptState, ImplementedAs=createFunction] Promise create(ScalarValueString key);
-  [CallWith=ScriptState] Promise rename(ScalarValueString oldKey, ScalarValueString newKey);
-  [CallWith=ScriptState] Promise get(ScalarValueString key);
-  [CallWith=ScriptState, ImplementedAs=deleteFunction] Promise delete(ScalarValueString key);
+  [CallWith=ScriptState] Promise get(ScalarValueString fetchStoreName);
+  [CallWith=ScriptState] Promise has(ScalarValueString fetchStoreName);
+  [CallWith=ScriptState, ImplementedAs=createFunction] Promise create(ScalarValueString fetchStoreName);
+  [CallWith=ScriptState, ImplementedAs=deleteFunction] Promise delete(ScalarValueString fetchStoreName);
   [CallWith=ScriptState] Promise keys();
-  // FIXME: There are a number of other missing methods here and an active discussion ongoing on https://github.com/slightlyoff/ServiceWorker/issue/314
-  // and https://github.com/slightlyoff/ServiceWorker/issues/315 about which should stay in. Once that discussion resolves, add the rest of the methods.
+  // FIXME: From https://github.com/slightlyoff/ServiceWorker/issues/372 and the updated
+  // https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#cache-storage ,
+  // we have yet to implement match().
 };