Merge "Fix multiple configuration changes in multiwindow" into nyc-dev

        if (callbacks != null) {

            final int N = callbacks.size();

            for (int i=0; i<N; i++) {

                performConfigurationChanged(callbacks.get(i), null, config, null,

                        REPORT_TO_ACTIVITY);

                ComponentCallbacks2 cb = callbacks.get(i);

                if (cb instanceof Activity) {

                    // If callback is an Activity - call corresponding method to consider override

                    // config and avoid onConfigurationChanged if it hasn't changed.

                    Activity a = (Activity) cb;

                    performConfigurationChangedForActivity(mActivities.get(a.getActivityToken()),

                            config, REPORT_TO_ACTIVITY);

                } else {

                    performConfigurationChanged(cb, null, config, null, REPORT_TO_ACTIVITY);

                }

            }

        }

    }