Track master branch for repohooks project

Changes to repohooks will need to be applied to all branches. Instead of
cherry-picking every change made to repohooks, let's just track the
master branch instead.

BUG=b/149121748
TEST=repo init and repo sync

Change-Id: Ibe6ff4f5b7f22842838eb87a239ec379f812abb8
1 file changed
tree: 82ece6f76ef8d763cf8fe31f9a938991918be2ab
  1. LICENSE
  2. PRESUBMIT.cfg
  3. README.md
  4. external_full.xml
README.md

Manifests used to checkout COS source

Usage: repo init -u https://cos.googlesource.com/cos/manifest.git && repo sync.