am 65cd1e95: am b86c34ae: am f05eecc3: am a47d12e3: Merge "Remove LOCAL_SRC_FILES as precondition of enabling dexpreopt"

* commit '65cd1e953574e81f3fe9eb0e32eea0c43cac26ec':
  Remove LOCAL_SRC_FILES as precondition of enabling dexpreopt