IDL: Fix IDL description of IDBObjectStore

An extended attribute [EnforceRange] is applicable to integer types,
and not applicable to others, e.g. arguments.
This CL fixes the folloing wrong usage of [EnforceRange], and it
follows the spec of IDBOjbectStore.
https://w3c.github.io/IndexedDB/#object-store-interface


Bug: 819112
Change-Id: I65fa19cfd4d1119213390a54dba3247ee0cd2b4a
Reviewed-on: https://chromium-review.googlesource.com/c/1280622
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Hitoshi Yoshida <peria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599616}

third_party/blink/renderer/modules/indexeddb/idb_object_store.idl

@@ -41,9 +41,9 @@
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest get(any key);
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest getKey(any key);
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest getAll([Default=Undefined] optional any query,
-                                                                                    [EnforceRange] optional unsigned long count);
+                                                                         optional [EnforceRange] unsigned long count);
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest getAllKeys([Default=Undefined] optional any query,
-                                                                             [EnforceRange] optional unsigned long count);
+                                                                             optional [EnforceRange] unsigned long count);
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest count([Default=Undefined] optional any key);
 
     [NewObject, CallWith=ScriptState, RaisesException] IDBRequest openCursor([Default=Undefined] optional any range,