Validate pid can be trusted

Bug: 200288596
Test: Manual
Test: atest android.security.cts.AttributionSourceTest#testPidCheck
Change-Id: I07f86ba220bedb1393f4d7ed23175e92d4576601
(cherry picked from commit f29223746d9009a592b0ee7ee5a92398589c5b53)
Merged-In:I07f86ba220bedb1393f4d7ed23175e92d4576601
2 files changed