commit eb7d6de0afd4192d76bed8b1346369c1092bd51a
author Arun Joseph <arunjoseph@google.com> Fri Jun 27 07:50:33 2025 -0700
committer Arun Joseph <arunjoseph@google.com> Fri Jun 27 07:51:56 2025 -0700
tree ac8b8c4bb2f694fc4426498822c3b378d22e72cb
parent f3902244efcd7a5ae62c6345bd02107d60358400

Use initialization-on-demand holder idiom to optimize MddConfigs proto flag memory usage.

This fix reduced the showmap_pss_bytes_imperceptible_.adservice metric from 7386112 to 6948864

Other minor changes:
 * Return null for all exceptions in ProtoParserUtil. (As Base64.decode may return unchecked exception IllegalArgumentException)

Bug: 427618408
BYPASS_PS_FLAG_CHECK: Memory optimization on proto flag usage.
Flag: EXEMPT (bug 337358613)
Test: atest AdServicesServiceCoreUnitTests:FlagsTest
Test: atest AdServicesServiceCoreUnitTests:PhFlagsTest
Change-Id: I5b58bd41f5e85b44a1e6523b896c2757caf4f311