Merge changes from topic "concurrent-keyguard" into udc-dev am: cc5495e9 am:...

                            mRearDisplayPresentationController);

            DeviceStateRequest concurrentDisplayStateRequest = DeviceStateRequest.newBuilder(

                    mConcurrentDisplayState).build();

            try {

                mDeviceStateManager.requestState(

                        concurrentDisplayStateRequest,

                        mExecutor,

                        deviceStateCallback

                );

            } catch (SecurityException e) {

                // If a SecurityException occurs when invoking DeviceStateManager#requestState

                // (e.g. if the caller is not in the foreground, or if it does not have the required

                // permissions), we should first clean up our local state before re-throwing the

                // SecurityException to the caller. Otherwise, subsequent attempts to

                // startRearDisplayPresentationSession will always fail.

                mRearDisplayPresentationController = null;

                throw e;

            }

        }

    }