am dc5f3888: am 135677a7: For userdebug builds, enable Dalvik lock contention sampling.

Merge commit 'dc5f3888d092310f1bb7f0d26be05d4b4cef6b91' into kraken

* commit 'dc5f3888d092310f1bb7f0d26be05d4b4cef6b91':
  For userdebug builds, enable Dalvik lock contention sampling.