Revert "Track our chromium org repo."

The gnex fix is no longer needed, so no need to keep this forked.

This reverts commit c5a3cc644b8b649ab5c5e11a757f0b6cc4ad8e04.
Merge pull request #2 from CarabonaSTEA/aospa-kitkat

Revert "Track our chromium org repo."