Bug 1541677, part 2 - Remove the unused XPIDL version of GetInterfaceInfo. r=bzbarsky

Differential Revision: https://phabricator.services.mozilla.com/D26066

--HG--
extra : moz-landing-system : lando

js/xpconnect/idl/nsIXPConnect.idl

@@ -27,7 +27,6 @@ class nsWrapperCache;
 [ptr] native JSScriptPtr(JSScript);
 [ptr] native nsWrapperCachePtr(nsWrapperCache);
       native JSHandleId(JS::Handle<jsid>);
-[ptr] native InterfaceInfoPtr(const nsXPTInterfaceInfo);
 
 /***************************************************************************/
 
@@ -68,7 +67,6 @@ public:
 interface nsIXPConnectWrappedJS : nsIXPConnectJSObjectHolder
 {
     /* attribute 'JSObject' inherited from nsIXPConnectJSObjectHolder */
-    readonly attribute InterfaceInfoPtr InterfaceInfo;
     readonly attribute nsIIDPtr         InterfaceIID;
 
     // Returns the global object for our JS object. If this object is a

js/xpconnect/src/XPCWrappedJS.cpp

@@ -585,18 +585,6 @@ nsXPCWrappedJS* nsXPCWrappedJS::FindInherited(REFNSIID aIID) {
   return nullptr;
 }
 
-NS_IMETHODIMP
-nsXPCWrappedJS::GetInterfaceInfo(const nsXPTInterfaceInfo** infoResult) {
-  MOZ_ASSERT(GetClass(), "wrapper without class");
-  MOZ_ASSERT(GetClass()->GetInterfaceInfo(), "wrapper class without interface");
-
-  // Since failing to get this info will crash some platforms(!), we keep
-  // mClass valid at shutdown time.
-
-  *infoResult = GetClass()->GetInterfaceInfo();
-  return *infoResult ? NS_OK : NS_ERROR_UNEXPECTED;
-}
-
 NS_IMETHODIMP
 nsXPCWrappedJS::CallMethod(uint16_t methodIndex, const nsXPTMethodInfo* info,
                            nsXPTCMiniVariant* params) {