Revert of "Implement the inert attribute"

third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp b/third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp
index 27e1826487b0bb6a4f10df6ede73add0f79331a7..356be92faa256d5382dc70506d281f896d659a67 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXObjectImpl.cpp
@@ -598,26 +598,7 @@ bool AXObjectImpl::IsClickable() const {
   }
 }
 
-bool AXObjectImpl::AccessibilityIsIgnored() {
-  Node* node = GetNode();
-  if (!node) {
-    AXObjectImpl* parent = this->ParentObject();
-    while (!node && parent) {
-      node = parent->GetNode();
-      parent = parent->ParentObject();
-    }
-  }
-
-  if (node)
-    node->UpdateDistribution();
-
-  // TODO(aboxhall): Instead of this, propagate inert down through frames
-  Document* document = GetDocument();
-  while (document && document->LocalOwner()) {
-    document->LocalOwner()->UpdateDistribution();
-    document = document->LocalOwner()->ownerDocument();
-  }
-
+bool AXObjectImpl::AccessibilityIsIgnored() const {
   UpdateCachedAttributeValuesIfNeeded();
   return cached_is_ignored_;
 }
@@ -699,16 +680,11 @@ bool AXObjectImpl::ComputeIsInertOrAriaHidden(
             ignored_reasons->push_back(
                 IgnoredReason(kAXActiveModalDialog, dialog_object));
           } else {
-            ignored_reasons->push_back(IgnoredReason(kAXInertElement));
+            ignored_reasons->push_back(IgnoredReason(kAXInert));
           }
         } else {
-          const AXObjectImpl* inert_root_el = InertRoot();
-          if (inert_root_el == this) {
-            ignored_reasons->push_back(IgnoredReason(kAXInertElement));
-          } else {
-            ignored_reasons->push_back(
-                IgnoredReason(kAXInertSubtree, inert_root_el));
-          }
+          // TODO(aboxhall): handle inert attribute if it eventuates
+          ignored_reasons->push_back(IgnoredReason(kAXInert));
         }
       }
       return true;
@@ -726,10 +702,10 @@ bool AXObjectImpl::ComputeIsInertOrAriaHidden(
   if (hidden_root) {
     if (ignored_reasons) {
       if (hidden_root == this) {
-        ignored_reasons->push_back(IgnoredReason(kAXAriaHiddenElement));
+        ignored_reasons->push_back(IgnoredReason(kAXAriaHidden));
       } else {
         ignored_reasons->push_back(
-            IgnoredReason(kAXAriaHiddenSubtree, hidden_root));
+            IgnoredReason(kAXAriaHiddenRoot, hidden_root));
       }
     }
     return true;
@@ -764,26 +740,6 @@ const AXObjectImpl* AXObjectImpl::AriaHiddenRoot() const {
   return 0;
 }
 
-const AXObjectImpl* AXObjectImpl::InertRoot() const {
-  const AXObjectImpl* object = this;
-  if (!RuntimeEnabledFeatures::inertAttributeEnabled())
-    return 0;
-
-  while (object && !object->IsAXNodeObject())
-    object = object->ParentObject();
-  Node* node = object->GetNode();
-  Element* element = node->IsElementNode()
-                         ? ToElement(node)
-                         : FlatTreeTraversal::ParentElement(*node);
-  while (element) {
-    if (element->hasAttribute(inertAttr))
-      return AxObjectCache().GetOrCreate(element);
-    element = FlatTreeTraversal::ParentElement(*element);
-  }
-
-  return 0;
-}
-
 bool AXObjectImpl::IsDescendantOfDisabledNode() const {
   UpdateCachedAttributeValuesIfNeeded();
   return cached_is_descendant_of_disabled_node_;