Add Yoav Weiss as a core OWNER.
Add Yoav Weiss as a core OWNER.

R=blink-core-owners@chromium.org
TBR=eseidel@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/374573003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@177577 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs