Merge "DO NOT MERGE Adding unit tests for ExternalCallList." into nyc-mr1-dev
am: ff81bf19ea

* commit 'ff81bf19ea85ae61cc2904a5cb79d8c6c61f31f5':
  DO NOT MERGE Adding unit tests for ExternalCallList.

Change-Id: Id8571be3c7d1a1beb0e7d072fe511875a878b690