Merge "ART: Flush ostream less frequently in GraphVisualizer" am: 15a605e
am: 9049d07

* commit '9049d072d9d815c8056d80d700cffa4b97971ecd':
  ART: Flush ostream less frequently in GraphVisualizer

Change-Id: Ib0a084edf89452e9ec52002b905bcd2997b71135