Finish all string attributes for Accessibility Object Model Phase 1.

third_party/WebKit/Source/core/dom/AccessibleNode.h

Index: third_party/WebKit/Source/core/dom/AccessibleNode.h
diff --git a/third_party/WebKit/Source/core/dom/AccessibleNode.h b/third_party/WebKit/Source/core/dom/AccessibleNode.h
index a423caeb6214ece94a00f7884157f918ae8a0958..33bbf349f7ce642534c0dfa17b535649a2ac8514 100644
--- a/third_party/WebKit/Source/core/dom/AccessibleNode.h
+++ b/third_party/WebKit/Source/core/dom/AccessibleNode.h
@@ -18,7 +18,22 @@ class Element;
 // All of the properties of AccessibleNode that have type "string".
 // TODO(dmazzoni): Add similar enums for all of the properties with
 // type bool, float, reference, and reference list.
-enum class AOMStringProperty { kRole, kLabel };
+enum class AOMStringProperty {
+  kAutocomplete,
+  kChecked,
+  kCurrent,
+  kInvalid,
+  kKeyShortcuts,
+  kLabel,
+  kLive,
+  kOrientation,
+  kPlaceholder,
+  kRelevant,
+  kRole,
+  kRoleDescription,
+  kSort,
+  kValueText
+};
 
 // Accessibility Object Model node
 // Explainer: https://github.com/WICG/aom/blob/master/explainer.md