Flush out hidden calls to bloatedCharacters()

These calls were hiding behind innocuous-sounding function names. This CL
brings them out into the harsh light of day where they will cower and fall.

R=eseidel@chromium.org
BUG=254708

Review URL: https://codereview.chromium.org/18711005

git-svn-id: svn://svn.chromium.org/blink/trunk@154148 bbb929c8-8fbe-4397-9dbb-9b2b20218538