Move the remaining color properties out of oldApplyProperty

Move the following properties out of oldApplyProperty:
-webkit-tap-highlight-color
lighting-color
flood-color
stop-color

I've called the converter for the svg color properties convertSVGColor instead
of convertColor since they are parsed slightly differently to the rest of the 
css colors (we resolve e.g. red to a RGBA value in the parser for svg colors,
while in the StyleBuilder for css colors). The other color property
-webkit-tap-highlight-color I've used custom_value for, but we can later move
this to StyleBuilderConverter::convertColor and call into this from the rest of
the css color properties.

BUG=237400

Review URL: https://codereview.chromium.org/267403002

git-svn-id: svn://svn.chromium.org/blink/trunk@173509 bbb929c8-8fbe-4397-9dbb-9b2b20218538