perfetto_hprof: do not wait for listener

waiting for the listener thread added significant time to app startup.

Test: flash flame-userdebug
      functional: take heap profile
      performance: trace chrome startup. perfetto_hprof init < 500us.
      art/tools/run-gtests.sh: https://gist.github.com/segfaulthunter/27f6c7d794b511b4a14bf14166a84b85
      art/test/testrunner/testrunner.py: PASS
      art/tools/run-libcore-tests.sh: PASS
      art/tools/run-libjdwp-tests.sh: PASS

Bug: 147667830
Change-Id: Ic5f74aba653aee2012b7335487774aafe00a655d
1 file changed