tree 67cc0b9614c9c9ef75e3c51fcc68c0d3389bfa65
parent 41fe6b80cfb81badbc5b01cdb28561fd2377e7ba
author Vadim Bendebury <vbendeb@chromium.org> 1406516045 -0700
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1406592189 +0000

willis: use 'revision' instead of 'tracking_branch' when necessary

Some repo git trees in the manifest have their 'revision' field set to
a valid git SHA1. This value should be used as the proper tracking
branch for those trees.

Also, instead of 'manually' figuring out the list of projects, use the
Manifest object method.

BUG=none
TEST=Running 'willis' in the Chrome OS repo does not show trees in
     chromite/third_party/swarming.client,
     src/third_party/chromium_build, and src/third_party/mojo as not
     matching the tracking branch anymore.

Change-Id: Ida2727fcf05126471287f2e57ad0b038e0b41318
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/209968
Reviewed-by: David James <davidjames@chromium.org>