Enable CSSMaskingInterop by default

This patch enables our unprefixed and updated css masking behavior.

Spec: https://drafts.fxtf.org/css-masking/#the-mask
Intent-to-ship: https://groups.google.com/a/chromium.org/g/blink-dev/c/ihw9gYY2ko0

Bug: 1418401
Change-Id: I00b5e672c4dc62c9f17d797c3632f0625d4d8bfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4985827
Commit-Queue: Philip Rogers <pdr@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1216712}

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -979,7 +979,7 @@
       // Tracking bug: https://crbug.com/1418401
       // Spec: https://drafts.fxtf.org/css-masking/#the-mask
       name: "CSSMaskingInterop",
-      status: "experimental",
+      status: "stable",
     },
     {
       name: "CSSMixBlendModePlusLighter",

third_party/blink/web_tests/virtual/stable/webexposed/css-properties-as-js-properties-expected.txt

@@ -267,6 +267,14 @@ markerEnd
 markerMid
 markerStart
 mask
+maskClip
+maskComposite
+maskImage
+maskMode
+maskOrigin
+maskPosition
+maskRepeat
+maskSize
 maskType
 mathDepth
 mathShift

third_party/blink/web_tests/virtual/stable/webexposed/css-property-listing-expected.txt

@@ -22,14 +22,8 @@ All changes to this list should go through Blink's feature review process: http:
     -webkit-mask-box-image-slice
     -webkit-mask-box-image-source
     -webkit-mask-box-image-width
-    -webkit-mask-clip
-    -webkit-mask-composite
-    -webkit-mask-image
-    -webkit-mask-origin
     -webkit-mask-position-x
     -webkit-mask-position-y
-    -webkit-mask-repeat
-    -webkit-mask-size
     -webkit-perspective-origin-x
     -webkit-perspective-origin-y
     -webkit-print-color-adjust
@@ -246,7 +240,13 @@ All changes to this list should go through Blink's feature review process: http:
     marker-end
     marker-mid
     marker-start
-    mask
+    mask-clip
+    mask-composite
+    mask-image
+    mask-mode
+    mask-origin
+    mask-repeat
+    mask-size
     mask-type
     math-depth
     math-shift
@@ -414,23 +414,12 @@ All changes to this list should go through Blink's feature review process: http:
         break-before
     -webkit-column-break-inside
         break-inside
-    -webkit-mask
-        -webkit-mask-clip
-        -webkit-mask-image
-        -webkit-mask-origin
-        -webkit-mask-position-x
-        -webkit-mask-position-y
-        -webkit-mask-repeat
-        -webkit-mask-size
     -webkit-mask-box-image
         -webkit-mask-box-image-outset
         -webkit-mask-box-image-repeat
         -webkit-mask-box-image-slice
         -webkit-mask-box-image-source
         -webkit-mask-box-image-width
-    -webkit-mask-position
-        -webkit-mask-position-x
-        -webkit-mask-position-y
     -webkit-text-stroke
         -webkit-text-stroke-color
         -webkit-text-stroke-width
@@ -683,6 +672,19 @@ All changes to this list should go through Blink's feature review process: http:
         marker-end
         marker-mid
         marker-start
+    mask
+        -webkit-mask-position-x
+        -webkit-mask-position-y
+        mask-clip
+        mask-composite
+        mask-image
+        mask-mode
+        mask-origin
+        mask-repeat
+        mask-size
+    mask-position
+        -webkit-mask-position-x
+        -webkit-mask-position-y
     offset
         offset-anchor
         offset-distance
@@ -927,6 +929,22 @@ All changes to this list should go through Blink's feature review process: http:
         margin-inline-end
     -webkit-margin-start
         margin-inline-start
+    -webkit-mask
+        mask
+    -webkit-mask-clip
+        mask-clip
+    -webkit-mask-composite
+        mask-composite
+    -webkit-mask-image
+        mask-image
+    -webkit-mask-origin
+        mask-origin
+    -webkit-mask-position
+        mask-position
+    -webkit-mask-repeat
+        mask-repeat
+    -webkit-mask-size
+        mask-size
     -webkit-max-logical-height
         max-block-size
     -webkit-max-logical-width