Add per-file owner for KeyChainSystemService.java

Bug: 291751402
Test: N/A
Change-Id: Ibfd0f41bc49c7c72e31a9c45f760edba93fbfe32
diff --git a/services/core/java/com/android/server/security/OWNERS b/services/core/java/com/android/server/security/OWNERS
index f408d7c..fa4bf22 100644
--- a/services/core/java/com/android/server/security/OWNERS
+++ b/services/core/java/com/android/server/security/OWNERS
@@ -4,3 +4,4 @@
 
 per-file *AttestationVerification* = file:/core/java/android/security/attestationverification/OWNERS
 per-file FileIntegrity*.java = victorhsieh@google.com
+per-file KeyChainSystemService.java = file:platform/packages/apps/KeyChain:/OWNERS