Bug 1389581 part 2. Remove the now-unused getComponentsForScope API. r=kmag

js/xpconnect/idl/xpccomponents.idl

@@ -483,15 +483,6 @@ interface nsIXPCComponents_Utils : nsISupports
     [implicit_jscontext]
     void forcePermissiveCOWs();
 
-    /*
-     * This seemingly-paradoxical API allows privileged code to explicitly give
-     * unprivileged code a reference to its own Components object (whereas it's
-     * normally hidden away on a scope chain visible only to XBL methods). See
-     * also SpecialPowers.getComponents.
-     */
-    [implicit_jscontext]
-    jsval getComponentsForScope(in jsval vscope);
-
     /*
      * Dispatches a runnable to the current/main thread. If |scope| is passed,
      * the runnable will be dispatch in the compartment of |scope|, which

js/xpconnect/src/XPCComponents.cpp

@@ -2677,23 +2677,6 @@ nsXPCComponents_Utils::ForcePermissiveCOWs(JSContext* cx)
     return NS_OK;
 }
 
-NS_IMETHODIMP
-nsXPCComponents_Utils::GetComponentsForScope(HandleValue vscope, JSContext* cx,
-                                             MutableHandleValue rval)
-{
-    if (!vscope.isObject())
-        return NS_ERROR_INVALID_ARG;
-    JSObject* scopeObj = js::UncheckedUnwrap(&vscope.toObject());
-    XPCWrappedNativeScope* scope = ObjectScope(scopeObj);
-    RootedObject components(cx);
-    if (!scope->GetComponentsJSObject(&components))
-        return NS_ERROR_FAILURE;
-    if (!JS_WrapObject(cx, &components))
-        return NS_ERROR_FAILURE;
-    rval.setObject(*components);
-    return NS_OK;
-}
-
 NS_IMETHODIMP
 nsXPCComponents_Utils::Dispatch(HandleValue runnableArg, HandleValue scope,
                                 JSContext* cx)