Use DataEquivalent(...) when comparing StyleSVGResources

While the underlying SVGResource should be unique (or nullptr - for
invalid cases), the StyleSVGResource wrapper usually isn't. Hence we
need to use DataEquivalent(...) to properly determine equality.

Bug: 769774, 855914
Change-Id: I333bc7a737d0635aabe35e39bb066edbc4282790
Reviewed-on: https://chromium-review.googlesource.com/1118219
Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Fredrik Söderquist <fs@opera.com>
Cr-Commit-Position: refs/heads/master@{#571099}
1 file changed