[css-filters] Migrate absolute-under-clip-under-filter.html to WPT
Migrate this test out of third_party/blink/web_tests/css3/filters
and into the WPT-specific directory, adding links to the relevant
specs and a test assertion describing its purpose, and renames it
to clip-under-filter-001.html.
Bug: 1063749
Change-Id: I8f54983f67fe4249f2d73339ec4d5ceaa432999b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2141497
Commit-Queue: Miyoung Shin <myid.shin@igalia.com>
Reviewed-by: Fredrik Söderquist <fs@opera.com>
Cr-Commit-Position: refs/heads/master@{#757820}
diff --git a/css/filter-effects/clip-under-filter-001.html b/css/filter-effects/clip-under-filter-001.html
new file mode 100644
index 0000000..7fbf0d6
--- /dev/null
+++ b/css/filter-effects/clip-under-filter-001.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>CSS Filters: Clips on descendants of filter elements are applied</title>
+<link rel="author" title="Xianzhu Wang" href="wangxianzhu@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#funcdef-filter-blur">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#overflow-properties">
+<link rel="help" href="https://crbug.com/809102">
+<link rel="match" href="reference/clip-under-filter-001-ref.html">
+<meta name="assert" content="Check that there is a blurred square, left half blue and right half green."/>
+
+<div style="filter: blur(10px)">
+ <div style="position: relative; width: 100px; height: 100px; background: blue; overflow: hidden">
+ <div style="position: absolute; width: 100px; height: 100px; right: -50px; background: green"></div>
+ </div>
+</div>
diff --git a/css/filter-effects/reference/clip-under-filter-001-ref.html b/css/filter-effects/reference/clip-under-filter-001-ref.html
new file mode 100644
index 0000000..60c2c33
--- /dev/null
+++ b/css/filter-effects/reference/clip-under-filter-001-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<div style="filter: blur(10px)">
+ <div style="width: 100px; height: 100px; background: blue">
+ <div style="position: relative; left: 50px; width: 50px; height: 100px; background: green"></div>
+ </div>
+</div>
