Implement the inert attribute

third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt

Index: third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt b/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt
index 70b9d7b0557184d4fe3e2494af0b48cb40e2fbbd..5b72dadf40b65200e4e0bab92aee89c63cda36db 100644
--- a/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-ignoredNodes-expected.txt
@@ -5,7 +5,8 @@ hidden non-treeitem
 Descendant of aria-hidden node
 List item also presentational
 Div in list isn't presentational
-Content within label refers to label container     
+Content within label refers to label container       inert button
+button in inert subtree
 
 WebArea
   tree
@@ -92,7 +93,7 @@ WebArea
   "ignored": true,
   "ignoredReasons": [
     {
-      "name": "ariaHidden",
+      "name": "ariaHiddenElement",
       "value": {
         "type": "boolean",
         "value": true
@@ -113,7 +114,7 @@ WebArea
   "ignored": true,
   "ignoredReasons": [
     {
-      "name": "ariaHiddenRoot",
+      "name": "ariaHiddenSubtree",
       "value": {
         "type": "idref",
         "relatedNodes": [
@@ -178,8 +179,17 @@ WebArea
 }
 
 WebArea
+  GenericContainer
+  tree
+  img
+  button "Buttons are leaf nodes"
+  text "List item also presentational"
   *GenericContainer
     text "Div in list isn't presentational"
+  checkbox "Content within label refers to label container"
+  GenericContainer
+  combobox
+  GenericContainer
 {
   "nodeId": "<string>",
   "ignored": false,
@@ -357,11 +367,17 @@ WebArea
 }
 
 WebArea
+  GenericContainer
+  tree
+  img
+  button "Buttons are leaf nodes"
+  text "List item also presentational"
+  GenericContainer
+  checkbox "Content within label refers to label container"
+  GenericContainer
   *combobox
     MenuListPopup
-      menuitem "Options should be"
-      menuitem "sent down even though"
-      menuitem "they are grandchildren"
+  GenericContainer
 {
   "nodeId": "<string>",
   "ignored": false,
@@ -414,3 +430,88 @@ WebArea
   "domNode": "select"
 }
 
+WebArea
+  combobox
+    MenuListPopup
+      *menuitem "Options should be"
+      menuitem "sent down even though"
+      menuitem "they are grandchildren"
+{
+  "nodeId": "<string>",
+  "ignored": false,
+  "role": {
+    "type": "role",
+    "value": "menuitem"
+  },
+  "name": {
+    "type": "computedString",
+    "value": "Options should be",
+    "sources": [
+      {
+        "type": "relatedElement",
+        "attribute": "aria-labelledby"
+      },
+      {
+        "type": "attribute",
+        "attribute": "aria-label"
+      },
+      {
+        "type": "contents",
+        "value": {
+          "type": "computedString",
+          "value": "Options should be"
+        }
+      }
+    ]
+  },
+  "properties": [],
+  "domNode": "option"
+}
+
+WebArea
+  *Ignored
+{
+  "nodeId": "<string>",
+  "ignored": true,
+  "ignoredReasons": [
+    {
+      "name": "inertElement",
+      "value": {
+        "type": "boolean",
+        "value": true
+      }
+    }
+  ],
+  "role": {
+    "type": "internalRole",
+    "value": "Ignored"
+  },
+  "domNode": "button"
+}
+
+WebArea
+  *Ignored
+{
+  "nodeId": "<string>",
+  "ignored": true,
+  "ignoredReasons": [
+    {
+      "name": "inertSubtree",
+      "value": {
+        "type": "idref",
+        "relatedNodes": [
+          {
+            "idref": "inert-root",
+            "nodeResult": "div#inert-root"
+          }
+        ]
+      }
+    }
+  ],
+  "role": {
+    "type": "internalRole",
+    "value": "Ignored"
+  },
+  "domNode": "button"
+}
+