Update AccountManagerService checkKeyIntent.

Block intents with "content" data scheme.

Bug: 349780950
Test: manual
Flag: EXEMPT bugfix
(cherry picked from commit c1e79495a49bd4d3e380136fe4bca7ac1a9ed763)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:1bcf4f36c171a73990b47136930af1930ccd3ece)
Merged-In: I8b23191d3d60036ca7ddf0ef7dcba6b38fb27b3c
Change-Id: I8b23191d3d60036ca7ddf0ef7dcba6b38fb27b3c
1 file changed