commit abf1e994d236a65180eecfcb6997003ab12795df
author Sascha Haeberling <haeberling@google.com> Tue Jan 20 18:59:08 2015 -0800
committer Sascha Haeberling <haeberling@google.com> Fri Jan 23 14:06:00 2015 -0800
tree d575612f5048d9a477ed4aeef6b6065e3087dc82
parent a6bfec1e1e6eec96fa33a1e40ae9841e95a24280

CaptureSession can now be started with an empty placeholder.

  Bug: 19014774
  Bug: 18853119
  Bug: 18979823

Being able to start with an empty placeholder and then updating that
placeholder allows us to add a visual entry to the filmstrip early on.

This avoid jarring effects where after taking many apid fire shots and
going to filmstrip, the entries are appearing one after the other.
This was caused by sessions only getting started when the thumbnail was
produced, which can take a while when multiple shots are in the
encoding pipeline.

Also contains changes that make CaptureSession testable.

Change-Id: I3d44704099be81524f8e165f3f09de6eebfc147b