In tweaking proguard rules in androidx microbenchmarks, I noticed that some of our generated moshi code references to a values array are failing to resolve, and crashing at runtime:

> ./gradlew benchmark:benchmark-benchmark:installRelease && adb shell am instrument -w -r -e debug false -e newRunListenerMode true -e class 'androidx.benchmark.benchmark.TrivialJavaBenchmark' -e androidx.benchmark.output.enable true -e listener androidx.benchmark.junit4.InstrumentationResultsRunListener androidx.benchmark.benchmark.test/androidx.benchmark.junit4.AndroidBenchmarkRunner

Time: 9.563
There were 2 failures:
1) increment(androidx.benchmark.benchmark.TrivialJavaBenchmark)
java.lang.ExceptionInInitializerError
	at androidx.benchmark.junit4.BenchmarkRule$applyInternal$$inlined$Statement$1.evaluate(SourceFile:123)
	at androidx.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(Unknown Source:11)
	at org.junit.rules.RunRules.evaluate(Unknown Source:2)
...
	at androidx.test.runner.AndroidJUnitRunner.onStart(SourceFile:134)
	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2402)
Caused by: java.lang.RuntimeException: java.lang.NoSuchMethodException: androidx.benchmark.json.BenchmarkData$TestResult$ProfilerOutput$Type.values []
	at java.lang.Enum.enumValues(Enum.java:315)
...
	at androidx.benchmark.ResultWriter.<clinit>(SourceFile:20)
	... 31 more
Caused by: java.lang.NoSuchMethodException: androidx.benchmark.json.BenchmarkData$TestResult$ProfilerOutput$Type.values []
	at java.lang.Class.getMethod(Class.java:2937)
	at java.lang.Class.getDeclaredMethod(Class.java:2914)
	at java.lang.Enum.enumValues(Enum.java:312)
	... 64 more

# also repros with
#    ./gradlew benchmark:benchmark-benchmark:cC -P android.testInstrumentationRunnerArguments.class=androidx.benchmark.benchmark.TrivialJavaBenchmark
# but above makes crash stack clearer

Repro AndroidX CL, which just enables R8 in a trivial sample benchmark, and tweaks proguard rules to get it (almost) running: https://android-review.git.corp.google.com/c/platform/frameworks/support/+/3073538