Adds accessibility role for details element

Source/core/accessibility/AXRenderObject.cpp

Index: Source/core/accessibility/AXRenderObject.cpp
diff --git a/Source/core/accessibility/AXRenderObject.cpp b/Source/core/accessibility/AXRenderObject.cpp
index 05c40804f5ff5fb854cd1445ab2f7325e8b6ff48..035d4e1f155a3568dea904a4bcb75cb66b2e5f3d 100644
--- a/Source/core/accessibility/AXRenderObject.cpp
+++ b/Source/core/accessibility/AXRenderObject.cpp
@@ -278,6 +278,8 @@ AccessibilityRole AXRenderObject::determineAccessibilityRole()
         return ListMarkerRole;
     if (isHTMLButtonElement(node))
         return buttonRoleType();
+    if (isHTMLDetailsElement(node))
+        return DetailsRole;
     if (isHTMLLegendElement(node))
         return LegendRole;
     if (m_renderer->isText())
@@ -683,6 +685,9 @@ bool AXRenderObject::computeAccessibilityIsIgnored() const
     if (roleValue() == FigureRole)
         return false;
 
+    if (roleValue() == DetailsRole)
+        return false;
+
     // if this element has aria attributes on it, it should not be ignored.
     if (supportsARIAAttributes())
         return false;