DejankUtils fix for wrong thread init

If the very first call to DejankUtils happens to be on a binder
thread, DejankUtils will fail to initialize b/c it needs a main thread
looper to be available.

Fixes: 184642387
Test: SystemAppCheck
Change-Id: Ie8ed7cf3610902bbb41cf9640d506a404722c75b
1 file changed