Bug 708326 - Use IDL for Components.utils.forceGC; r=bholley

js/xpconnect/idl/xpccomponents.idl

@@ -152,7 +152,7 @@ interface ScheduledGCCallback : nsISupports
 /**
 * interface of Components.utils
 */
-[scriptable, uuid(90894460-26a2-44c2-a3fc-c96a5286614e)]
+[scriptable, uuid(9e0b065d-a755-482d-ab1f-cc0f26a6fdcd)]
 interface nsIXPCComponents_Utils : nsISupports
 {
 
@@ -260,6 +260,7 @@ interface nsIXPCComponents_Utils : nsISupports
      *
      * Force an immediate garbage collection cycle.
      */
+    [implicit_jscontext]
     void forceGC();
 
     /*

js/xpconnect/src/XPCComponents.cpp

@@ -3594,26 +3594,9 @@ nsXPCComponents_Utils::GetWeakReference(xpcIJSWeakReference **_retval)
 
 /* void forceGC (); */
 NS_IMETHODIMP
-nsXPCComponents_Utils::ForceGC()
+nsXPCComponents_Utils::ForceGC(JSContext *cx)
 {
-    nsXPConnect* xpc = nsXPConnect::GetXPConnect();
-    if (!xpc)
-        return NS_ERROR_FAILURE;
-
-    // get the xpconnect native call context
-    nsAXPCNativeCallContext *cc = nsnull;
-    nsresult rv = xpc->GetCurrentNativeCallContext(&cc);
-    if (!cc)
-        return rv;
-
-    // Get JSContext of current call
-    JSContext* cx;
-    cc->GetJSContext(&cx);
-    if (!cx)
-        return NS_ERROR_FAILURE;
-
     JS_GC(cx);
-
     return NS_OK;
 }