Examples of SVG demos that are broken because of the inappropriate tainting of same-domain or dataURI feImage references in this tweet:

https://twitter.com/w3unpocodetodo/status/992130115030175744

 Issue 856173  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/72d42782270b4c5578791b8b8c5aeb0ec81b6cee

commit 72d42782270b4c5578791b8b8c5aeb0ec81b6cee
Author: Fredrik Söderquist <fs@opera.com>
Date: Sat Sep 22 08:30:50 2018

Use StyleColor for the flood-color and lighting-color properties

This changes the _interface_ to these properties in ComputedStyle
(and SVGComputedStyle) to use StyleColor - storage is changed to
a <Color, bool> (separated) pair. Usage is updated accordingly.
This is needed in order to support "better" tainting on 'feFlood'
and other filter primitive elements to which these properties apply.
The actual tainting functions will be updated in a follow-up CL.

Bug: 792518
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_slimming_paint_v2;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I705ee38219615c4c691e4a5fbc73799a72b604da
Reviewed-on: https://chromium-review.googlesource.com/797271
Commit-Queue: Fredrik Söderquist <fs@opera.com>
Reviewed-by: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593438}
[add] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/WebKit/LayoutTests/svg/filters/feflood-currentcolor-expected.html
[add] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/WebKit/LayoutTests/svg/filters/feflood-currentcolor.html
[add] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/WebKit/LayoutTests/svg/filters/felighting-currentcolor-expected.html
[add] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/WebKit/LayoutTests/svg/filters/felighting-currentcolor.html
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/css/css_properties.json5
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/layout/svg/layout_svg_resource_filter_primitive.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/style/computed_style.h
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/style/svg_computed_style.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/style/svg_computed_style.h
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/style/svg_computed_style_defs.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/style/svg_computed_style_defs.h
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/svg/svg_fe_diffuse_lighting_element.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/svg/svg_fe_drop_shadow_element.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/svg/svg_fe_flood_element.cc
[modify] https://crrev.com/72d42782270b4c5578791b8b8c5aeb0ec81b6cee/third_party/blink/renderer/core/svg/svg_fe_specular_lighting_element.cc