GitLab

CRX file code currently lives under extensions/. However, 
component_updater also uses them to package components. The 
CRX code should therefore live as its own component.

BUG=371463
TBR=blundell@chromium.org

Review URL: https://codereview.chromium.org/474633005

Cr-Commit-Position: refs/heads/master@{#289966}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289966 0039d316-1c4b-4281-b951-d872f2087c98