Update stats-log-api-gen based off of google3 presubmit-checks

Bug: 161812407
Test: `m statslog-framework-java-gen`
Test: `m statslog-telephony-java-gen`
Test: `m stats-log-api-gen-test &&
out/host/linux-x86/nativetest/stats-log-api-gen-test/stats-log-api-gen-test`
Change-Id: If4a130e4728c4ffd632c76b6999e9a3da9b21f0c

Change-Id: Icddf5ef21155ede50319fc2bf7c8a361eeb09539