Move -webkit-box-reflect, -webkit-line-box-contain, -webkit-text-stroke-width, quotes out of oldApplyProperty

This patch moves the properties:
    -webkit-box-reflect
    -webkit-line-box-contain
    -webkit-text-stroke-width
    quotes
out of oldApplyProperty. I removed some of the defensive-style code so
that we can use the converter= system (invalid inputs will hit ASSERTs
in conversion, but we shouldn't get any since the parser shouldn't let
these through).

BUG=237400

Review URL: https://codereview.chromium.org/277793002

git-svn-id: svn://svn.chromium.org/blink/trunk@173878 bbb929c8-8fbe-4397-9dbb-9b2b20218538