Import AndroidX from build 7687115

./update_prebuilts.py -x 7687115

Bug: 195988821
Test: Global presubmit
Change-Id: I1019320405d459bdde4aab177e04f8ba7da916f1
Merged-In: I1019320405d459bdde4aab177e04f8ba7da916f1
(cherry picked from commit 2aa6e59e4af81f1c0ce2bab53d84777ac1e30d94)
357 files changed