(CANCELED) Delay determineAccessibleRole() from AXNodeObject::init() to roleValue()

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

Index: third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
index 3b33943fe56ecf63894974dceb437db5bf7e95ac..540a753bcd7032bc4c12c58d8629bbf855f2d025 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXNodeObject.cpp
@@ -163,7 +163,7 @@ bool AXNodeObject::computeAccessibilityIsIgnored(
     return true;
   }
 
-  if (m_role == UnknownRole) {
+  if (roleValue() == UnknownRole) {
     if (ignoredReasons)
       ignoredReasons->append(IgnoredReason(AXUninteresting));
     return true;
@@ -513,6 +513,18 @@ AccessibilityRole AXNodeObject::nativeAccessibilityRoleIgnoringAria() const {
   return UnknownRole;
 }
 
+AccessibilityRole AXNodeObject::roleValue() const {
+  if (m_role != NeedsToDetermineRole)
+    return m_role;
+  AXNodeObject* node = const_cast<AXNodeObject*>(this);
+  node->m_role = node->determineAccessibilityRole();
+  return m_role;
+}
+
+void AXNodeObject::setNeedsDetermineAccessibilityRole() {
+  m_role = NeedsToDetermineRole;
+}
+
 AccessibilityRole AXNodeObject::determineAccessibilityRole() {
   if (!getNode())
     return UnknownRole;
@@ -743,7 +755,7 @@ void AXNodeObject::init() {
   ASSERT(!m_initialized);
   m_initialized = true;
 #endif
-  m_role = determineAccessibilityRole();
+  setNeedsDetermineAccessibilityRole();
 }
 
 void AXNodeObject::detach() {
@@ -2192,7 +2204,7 @@ void AXNodeObject::textChanged() {
 
 void AXNodeObject::updateAccessibilityRole() {
   bool ignoredStatus = accessibilityIsIgnored();
-  m_role = determineAccessibilityRole();
+  setNeedsDetermineAccessibilityRole();
 
   // The AX hierarchy only needs to be updated if the ignored status of an
   // element has changed.