Fix broken javadoc for timeshiftmode am: d21f211d am: 9ffd2256

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21922606



Change-Id: I58190cd3063c5d10204df976e964745540e6ac00
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>