Support the essential part of Shadow DOM v1

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

Index: third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt
diff --git a/third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt b/third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt
index fcc6b0a3df3d85e63a4f447d932e03574c6deb7e..31493305ca5de0458a502ef43c214fa84d31a968 100644
--- a/third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt
+++ b/third_party/WebKit/LayoutTests/webexposed/element-instance-property-listing-expected.txt
@@ -28,6 +28,7 @@ namespace http://www.w3.org/1999/xhtml
     property addEventListener
     property animate
     property appendChild
+    property assignedSlot
     property attachShadow
     property attributes
     property baseURI
@@ -213,6 +214,7 @@ namespace http://www.w3.org/1999/xhtml
     property setAttributeNode
     property setAttributeNodeNS
     property shadowRoot
+    property slot
     property spellcheck
     property style
     property tabIndex
@@ -851,6 +853,8 @@ html element select
 html element shadow
     property getDistributedNodes
 html element slot
+    property getAssignedNodes
+    property getDistributedNodes
     property name
 html element small
 html element source
@@ -1113,6 +1117,7 @@ namespace http://www.w3.org/2000/svg
     property addEventListener
     property animate
     property appendChild
+    property assignedSlot
     property attachShadow
     property attributes
     property baseURI
@@ -1298,6 +1303,7 @@ namespace http://www.w3.org/2000/svg
     property setAttributeNode
     property setAttributeNodeNS
     property shadowRoot
+    property slot
     property spellcheck
     property style
     property tabIndex