Ensure DisplayTracker callback is not GC

Bug: 362696244
Test: build
Flag: NONE bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:6b2f4337738e669837a27213859c71eff2366cc0)
Merged-In: I124563b1a4d8a147d0e4570650e88c5aa2c2c8aa
Change-Id: I124563b1a4d8a147d0e4570650e88c5aa2c2c8aa
1 file changed