tree 19fc58ece366479efa3fa5673de8c9467ade6ac6
parent 463d5c347819b0d750c1ccaac7aac20c32035df9
author William A. Kennington III <wak@google.com> 1540868805 -0700
committer William A. Kennington III <wak@google.com> 1540871001 -0700

source/*: Make updating callbacks possible

Sometimes callers want to be able to update the callback used when the
source is acted upon. This is needed for updating references stored in
the callback.

Tested:
    Run through the unit test suite.

Change-Id: I78bda32569287964bfc9d49501869d3a2b497f3d
Signed-off-by: William A. Kennington III <wak@google.com>