IDL compiler: Implement proxying at ReferenceType

Bug: 839389
Change-Id: Ibdf190e9f5d670fc9a26e8fda1cca71646ee74cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1700107
Reviewed-by: Hitoshi Yoshida <peria@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678599}
2 files changed