Adding logging to track down alpha changes

Bug: 195853168
Test: Just logging
Change-Id: Ifd52101baa7af45f2253fd6c10b5d071c1a0e674
Merged-In: Ifd52101baa7af45f2253fd6c10b5d071c1a0e674
(cherry picked from commit 6ae68138f841ac1a3cc4d85e1e3a395b40500905)
1 file changed