Merge "Camera2: Make sure aborting captures on an idle device works." into lmp-dev

            checkIfCameraClosedOrInError();

            mDeviceHandler.post(mCallOnBusy);

            // If already idle, just do a busy->idle transition immediately, don't actually

            // flush.

            if (mIdle) {

                mDeviceHandler.post(mCallOnIdle);

                return;

            }

            try {

                LongParcelable lastFrameNumberRef = new LongParcelable();

                mRemoteDevice.flush(/*out*/lastFrameNumberRef);