Fix stats reporting over 100% methods compiled.

Add statistics for intrinsic and native stub compilation
and JIT failing to allocate memory for committing the
code. Clean up recording of compilation statistics.

New statistics when building aosp_taimen-userdebug boot
image with --dump-stats:
  Attempted compilation of 94304 methods: 99.99% (94295) compiled.
  OptStat#AttemptBytecodeCompilation: 89487
  OptStat#AttemptIntrinsicCompilation: 160
  OptStat#CompiledNativeStub: 4733
  OptStat#CompiledIntrinsic: 84
  OptStat#CompiledBytecode: 89478
  ...
where 94304=89487+4733+84 and 94295=89478+4733+84.

Test: testrunner.py -b --host --optimizing
Test: Manually inspect output of building boot image
      with --dump-stats.
Bug: 69627511
Change-Id: I15eb2b062a96f09a7721948bcc77b83ee4f18efd