Add missing import

Test: NotificationGutsManagerTest
Bug: 378087531
Flag: EXEMPT TEST_ONLY
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:dbb6f4e69d672420aa5719bab29f635b9b3c39ea
Merged-In: I98476edebb27a127000c91c7812ba49668528f57
Change-Id: I98476edebb27a127000c91c7812ba49668528f57
1 file changed