Merge changes I077465e3,I30173023 into nyc-dev
am: b848ef4

* commit 'b848ef45dacfcacfec59d020275cd5cc79e71f06':
  Fix: correctly destruct VIXL labels.
  Move Assemblers to the Arena.

Change-Id: I29ebd5bf07cb494813a151d056622f27e84ea069