Extract a DOMWindow interface from LocalDOMWindow and use it in the idl.

Source/modules/quota/DOMWindowQuota.h

Index: Source/modules/quota/DOMWindowQuota.h
diff --git a/Source/modules/quota/DOMWindowQuota.h b/Source/modules/quota/DOMWindowQuota.h
index 787ae463e299939b06afea412b90977fa0bfcaf8..f51637e9a12e9414b29aee3afa633057043b541d 100644
--- a/Source/modules/quota/DOMWindowQuota.h
+++ b/Source/modules/quota/DOMWindowQuota.h
@@ -38,14 +38,14 @@
 namespace blink {
 
 class DeprecatedStorageInfo;
-class LocalDOMWindow;
+class DOMWindow;
 
 class DOMWindowQuota final : public NoBaseWillBeGarbageCollected<DOMWindowQuota>, public WillBeHeapSupplement<LocalDOMWindow>, public DOMWindowProperty {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMWindowQuota);
     DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(DOMWindowQuota);
 public:
     static DOMWindowQuota& from(LocalDOMWindow&);
-    static DeprecatedStorageInfo* webkitStorageInfo(LocalDOMWindow&);
+    static DeprecatedStorageInfo* webkitStorageInfo(DOMWindow&);
     DeprecatedStorageInfo* webkitStorageInfo() const;
 
     void trace(Visitor*);