disable svg conic clip layout tests
disable svg conic clip layout tests

Disable SVG tests that use conic as clips until
Skia change to conic weight computed by path ops
lands.

R=fmalita@chromium.org
BUG=546538

Review URL: https://codereview.chromium.org/1412623005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#355533}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk