CacheStorage: Sync up IDL with the cache storage spec.

third_party/WebKit/Source/modules/cachestorage/Cache.idl

Index: third_party/WebKit/Source/modules/cachestorage/Cache.idl
diff --git a/third_party/WebKit/Source/modules/cachestorage/Cache.idl b/third_party/WebKit/Source/modules/cachestorage/Cache.idl
index 8657ca08ed2647b216673ba4d3d9176d136b3d5a..334593564847822f1ebdcd572507c7268c3fd416 100644
--- a/third_party/WebKit/Source/modules/cachestorage/Cache.idl
+++ b/third_party/WebKit/Source/modules/cachestorage/Cache.idl
@@ -7,11 +7,11 @@
 [
     Exposed=(Window,Worker),
 ] interface Cache {
-    [CallWith=ScriptState, RaisesException] Promise<Response> match(RequestInfo request, optional CacheQueryOptions options);
+    [CallWith=ScriptState, RaisesException] Promise<any> match(RequestInfo request, optional CacheQueryOptions options);
     [CallWith=ScriptState, RaisesException] Promise<sequence<Response>> matchAll(optional RequestInfo request, optional CacheQueryOptions options);
     [CallWith=ScriptState, RaisesException] Promise<void> add(RequestInfo request);
     [CallWith=ScriptState, RaisesException] Promise<void> addAll(sequence<RequestInfo> requests);
     [CallWith=ScriptState, RaisesException] Promise<void> put(RequestInfo request, Response response);
     [CallWith=ScriptState, ImplementedAs=deleteFunction, RaisesException] Promise<boolean> delete(RequestInfo request, optional CacheQueryOptions options);
-    [CallWith=ScriptState, RaisesException] Promise<sequence<Response>> keys(optional RequestInfo request, optional CacheQueryOptions options);
+    [CallWith=ScriptState, RaisesException] Promise<sequence<Request>> keys(optional RequestInfo request, optional CacheQueryOptions options);
 };