Remove rendering dependency in GraphicsContextAnnotation

BUG=297477

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=161125

Review URL: https://codereview.chromium.org/55223002

git-svn-id: svn://svn.chromium.org/blink/trunk@161178 bbb929c8-8fbe-4397-9dbb-9b2b20218538