Add myself to platform_graphics watchlist.
Add myself to platform_graphics watchlist.

TBR=schenney
NOTRY=true

Review URL: https://codereview.chromium.org/679913002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@184412 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk