Merge "Fix memory order and race bugs in Refbase.h & RefBase.cpp" am: 62212954ef am: d657e639cf am: fdad5af164
am: 3f9b589982

* commit '3f9b5899827869965620ef2c1b7f93cc3e1fc630':
  Fix memory order and race bugs in Refbase.h & RefBase.cpp

Change-Id: I14a708fa5c33f79bb929f9e738d28f1c7ab8cada