RubyNG: Make the flag status "test"

This CL has no behavior changes in production.

- Tests which should be fixed are listed in TestExpectations
- overhang-*.html tests have notable changes.
  They are progressions. RubyNG allows to overhang on whitespace-only
  text nodes.
- Other pixel results in this CL are due to differences between LayoutNG
  and the legacy layout.

Bug: 1069817
Change-Id: I4a1b8953f984de2841bb4e964534354286a64fb3
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng_disabled
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2228009
Commit-Queue: Kent Tamura <tkent@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774553}

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -967,6 +967,7 @@
     {
       name: "LayoutNGRuby",
       depends_on: ["LayoutNG"],
+      status: "test",
     },
     {
       name: "LayoutNGTable",

third_party/blink/web_tests/TestExpectations

@@ -3950,6 +3950,27 @@ crbug.com/995106 external/wpt/css/css-display/display-flow-root-list-item-001.ht
 crbug.com/930297 external/wpt/html/infrastructure/urls/resolving-urls/query-encoding/utf-16be.html?include=workers [ Timeout ]
 crbug.com/930297 external/wpt/html/infrastructure/urls/resolving-urls/query-encoding/utf-16le.html?include=workers [ Timeout ]
 
+# RubyNG TODOs
+crbug.com/1069817 external/wpt/css/css-ruby/empty-ruby-base-container-abs.html [ Failure ]
+crbug.com/1069817 external/wpt/css/css-ruby/empty-ruby-base-container-float.html [ Failure ]
+crbug.com/1069817 external/wpt/css/css-ruby/empty-ruby-base-container.html [ Failure ]
+crbug.com/1069817 external/wpt/css/css-ruby/line-break-around-ruby-001.html [ Failure ]
+crbug.com/1069817 fast/ruby/base-shorter-than-text.html [ Failure ]
+crbug.com/1069817 fast/ruby/float-overhang-from-ruby-text.html [ Failure ]
+crbug.com/1069817 fast/ruby/line-break-ruby.html [ Failure ]
+crbug.com/1069817 fast/ruby/position-after.html [ Failure ]
+crbug.com/1069817 fast/ruby/ruby-empty-rt.html [ Failure ]
+crbug.com/1069817 fast/ruby/ruby-run-break.html [ Failure ]
+crbug.com/1069817 fast/ruby/rubyDOM-remove-text2.html [ Failure ]
+crbug.com/1069817 fast/ruby/select-ruby.html [ Failure ]
+crbug.com/1069817 [ Linux ] fast/writing-mode/Kusa-Makura-background-canvas.html [ Failure ]
+crbug.com/1069817 [ Mac ] fast/writing-mode/Kusa-Makura-background-canvas.html [ Failure ]
+crbug.com/1069817 [ Win10 ] fast/writing-mode/Kusa-Makura-background-canvas.html [ Failure ]
+crbug.com/1069817 fast/writing-mode/flipped-blocks-inline-map-local-to-container.html [ Failure ]
+crbug.com/1069817 fast/writing-mode/japanese-ruby-vertical-lr.html [ Failure ]
+crbug.com/1069817 fast/writing-mode/japanese-ruby-vertical-rl.html [ Failure ]
+crbug.com/1069817 virtual/text-antialias/emphasis-avoid-ruby.html [ Failure ]
+
 crbug.com/676229 plugins/mouse-click-plugin-clears-selection.html [ Failure Pass ]
 crbug.com/742670 plugins/iframe-plugin-bgcolor.html [ Failure Pass ]
 crbug.com/780398 [ Mac ] plugins/mouse-capture-inside-shadow.html [ Failure Pass ]

third_party/blink/web_tests/accessibility/element-role-mapping-normal-expected.txt

@@ -112,8 +112,7 @@ AXRole: AXGenericContainer
                     AXRole: AXInlineTextBox "Google Chrome"
             AXRole: AXParagraph
                 AXRole: AXStaticText "Google Chrome is a free, open-source web browser developed by Google, released in 2008."
-                    AXRole: AXInlineTextBox "Google Chrome is a free, open-source web browser developed by Google, "
-                    AXRole: AXInlineTextBox "released in 2008."
+                    AXRole: AXInlineTextBox "Google Chrome is a free, open-source web browser developed by Google, released in 2008."
             AXRole: AXFooterAsNonLandmark
                 AXRole: AXParagraph
                     AXRole: AXStaticText "Footer in article"

third_party/blink/web_tests/platform/mac-mac10.12/paint/invalidation/ruby-flipped-blocks-expected.txt

-{
-  "layers": [
-    {
-      "name": "Scrolling Contents Layer",
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "backgroundColor": "#FFFFFF",
-      "invalidations": [
-        [7, 28, 22, 20],
-        [7, 8, 22, 20],
-        [27, 33, 12, 10]
-      ]
-    }
-  ]
-}
-

third_party/blink/web_tests/platform/mac/paint/invalidation/ruby-flipped-blocks-expected.txt

-{
-  "layers": [
-    {
-      "name": "Scrolling Contents Layer",
-      "bounds": [800, 600],
-      "contentsOpaque": true,
-      "backgroundColor": "#FFFFFF",
-      "invalidations": [
-        [8, 28, 21, 20],
-        [8, 8, 21, 20],
-        [28, 33, 11, 10]
-      ]
-    }
-  ]
-}
-