Remove the SVGColor and SVGPaint DOM interfaces (were deprecated).

LayoutTests/fast/css/getComputedStyle/computed-style-expected.txt

 Attributes that are exposed in the CSS computed style object:
 
 background-attachment: scroll;
 background-clip: border-box;
 background-color: rgba(0, 0, 0, 0);
 background-image: none;
 background-origin: padding-box;
 background-position: 0% 0%;
 background-repeat: repeat;
 background-size: auto;
@@ skipping 195 matching lines @@
 mask: none;
 filter: none;
 flood-color: rgb(0, 0, 0);
 flood-opacity: 1;
 lighting-color: rgb(255, 255, 255);
 stop-color: rgb(0, 0, 0);
 stop-opacity: 1;
 color-interpolation: srgb;
 color-interpolation-filters: linearrgb;
 color-rendering: auto;
-fill: #000000;
+fill: rgb(0, 0, 0);
 fill-opacity: 1;
 fill-rule: nonzero;
 marker-end: none;
 marker-mid: none;
 marker-start: none;
 shape-rendering: auto;
 stroke: none;
 stroke-dasharray: none;
 stroke-dashoffset: 0;
 stroke-linecap: butt;
@@ skipping 13 matching lines @@
 
 Other attributes that the computed style class supports:
 
 background-position-x: 0%;
 background-position-y: 0%;
 border-spacing: 0px 0px;
 overflow: visible;
 -webkit-mask-position-x: 0%;
 -webkit-mask-position-y: 0%;