Move DOMConvenienceAPI to stable.

third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt

Index: third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt
diff --git a/third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt b/third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt
index 0d3d9a0d1aaa252a12e8902eca89faf316744f50..48c1f87eb489a7b14b43e4061ed6fb50066a7cd7 100644
--- a/third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt
+++ b/third_party/WebKit/LayoutTests/virtual/stable/webexposed/element-instance-property-listing-expected.txt
@@ -27,12 +27,15 @@ namespace http://www.w3.org/1999/xhtml
     property TEXT_NODE
     property accessKey
     property addEventListener
+    property after
     property animate
+    property append
     property appendChild
     property assignedSlot
     property attachShadow
     property attributes
     property baseURI
+    property before
     property blur
     property childElementCount
     property childNodes
@@ -184,6 +187,7 @@ namespace http://www.w3.org/1999/xhtml
     property parentElement
     property parentNode
     property prefix
+    property prepend
     property previousElementSibling
     property previousSibling
     property querySelector
@@ -195,6 +199,7 @@ namespace http://www.w3.org/1999/xhtml
     property removeChild
     property removeEventListener
     property replaceChild
+    property replaceWith
     property requestPointerLock
     property scrollHeight
     property scrollIntoView
@@ -1085,12 +1090,15 @@ namespace http://www.w3.org/2000/svg
     property TEXT_NODE
     property accessKey
     property addEventListener
+    property after
     property animate
+    property append
     property appendChild
     property assignedSlot
     property attachShadow
     property attributes
     property baseURI
+    property before
     property blur
     property childElementCount
     property childNodes
@@ -1242,6 +1250,7 @@ namespace http://www.w3.org/2000/svg
     property parentElement
     property parentNode
     property prefix
+    property prepend
     property previousElementSibling
     property previousSibling
     property querySelector
@@ -1253,6 +1262,7 @@ namespace http://www.w3.org/2000/svg
     property removeChild
     property removeEventListener
     property replaceChild
+    property replaceWith
     property requestPointerLock
     property scrollHeight
     property scrollIntoView