Enable polling of arbitrary refs in GitilesPoller.
Enable polling of arbitrary refs in GitilesPoller.

This is needed to track refs/branch-heads/<branch>

BUG=389279
R=mmoss@chromium.org,iannucci@chromium.org,hinoka@chromium.org

Review URL: https://codereview.chromium.org/488893002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@290917 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build