Merge "Clear calling identity before invoking contrast listeners" into main

        @Override

        public void notifyContrastChanged(float contrast) {

            final Map<ContrastChangeListener, Executor> listeners;

            synchronized (mGlobalsLock) {

                // if value changed in the settings, update the cached value and notify listeners

                if (Math.abs(mContrast - contrast) < 1e-10) return;

                mContrast = contrast;

                if (!fixContrastAndForceInvertStateForMultiUser()) {

                    mContrastChangeListeners.forEach((listener, executor) -> executor.execute(

                            () -> listener.onContrastChanged(contrast)));

                    return;

                }

                listeners = new ArrayMap<>(mContrastChangeListeners);

            }

            listeners.forEach((listener, executor) -> {

                final long token = Binder.clearCallingIdentity();

                try {

                    executor.execute(() -> listener.onContrastChanged(contrast));

                } finally {

                    Binder.restoreCallingIdentity(token);

                }

            });

        }

        @Override