Fix building plugin

Convert javascript files to typescript.

This is adapted for gerrit 3.14/3.13.

Change-Id: Id16ae2c508603a6a4a2a34e8c7c75c4c602dd59c
9 files changed
tree: feb49703eaeed7ff675aa2d9b316d6654486d39e
  1. ref-copy/
  2. src/
  3. .gitignore
  4. BUILD