Add fuzzy data for test failures seen on the iOS GPU Process bot

Add fuzzy data for test failures seen on the iOS GPU Process bot
Unreviewed.

LayoutTests/imported/mozilla:

* svg/blend-exclusion.svg:
* svg/blend-overlay.svg:
* svg/text-gradient-01.svg:

LayoutTests/imported/w3c:

* web-platform-tests/css/css-backgrounds/background-rounded-image-clip.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-001.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-002.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-003.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-004.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-005.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-006.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-007.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-circle-008.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-001.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-002.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-003.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-004.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-005.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-006.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-007.html:
* web-platform-tests/css/css-masking/clip-path/clip-path-ellipse-008.html:
* web-platform-tests/css/css-transforms/css-skew-002.html:
* web-platform-tests/css/css-transforms/transforms-skewY.html:

LayoutTests:

* compositing/backgrounds/fixed-backgrounds.html:
* compositing/images/positioned-image-content-rect.html:
* css3/background/background-repeat-space-border.html:
* css3/background/background-repeat-space-content.html:
* css3/background/background-repeat-space-padding.html:
* css3/masking/clip-path-ellipse.html:
* css3/masking/clip-path-inset-corners.html:
* css3/masking/clip-path-restore.html:
* fast/backgrounds/gradient-background-shadow.html:
* fast/filter-image/filter-image-blur.html:
* fast/layers/overflow-scroll-transform-border-radius.html:
* fast/masking/clip-path-inset-large-radii.html:
* fast/overflow/line-clamp-with-text-shadow.html:
* fast/text/decorations-vertical-underline.html:
* fast/text/fitzpatrick-combination.html:
* fast/text/simple-line-layout-text-position-with-stroke.html:
* gpu-process/TestExpectations:
* svg/clip-path/clip-opacity.html:
* svg/clip-path/clip-path-objectboundingbox-003.svg:
* svg/clip-path/svg-in-html.html:
* svg/clip-path/webkit-clip-path-after.svg:
* svg/clip-path/webkit-clip-path-before.svg:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@289990 268f45cc-cd09-0410-ab3c-d52691b4dbfc