tree 3bcfadfd44a4ed7bfd24740520edea1b77a38af2
parent 40e84df4331135d190ac96a0d968f36131337824
author Tao Bao <tbao@google.com> 1451959073 -0800
committer Tao Bao <tbao@google.com> 1453238463 -0800

Add bind() function to the binder interface.

Update engine may have started and done some work before we call
applyPayload(). Add a new binder function bind() to register a
callback function that communicates with the update engine.

Bug: None
Test: 'mmma system/update_engine'.
Change-Id: Iafcdb250904b44f9526be15f0381690df50805a2