Implement computedRole and computedName (behind a flag)

Source/modules/accessibility/AXListBoxOption.cpp

Index: Source/modules/accessibility/AXListBoxOption.cpp
diff --git a/Source/modules/accessibility/AXListBoxOption.cpp b/Source/modules/accessibility/AXListBoxOption.cpp
index 340ba1f9bc803aaf8ed0db314bae374a9157de10..51ec89c8f80acd2a1fc1bc5bff871af6c230bca7 100644
--- a/Source/modules/accessibility/AXListBoxOption.cpp
+++ b/Source/modules/accessibility/AXListBoxOption.cpp
@@ -29,6 +29,7 @@
 #include "config.h"
 #include "modules/accessibility/AXListBoxOption.h"
 
+#include "core/dom/AXObjectCache.h"
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLSelectElement.h"
 #include "core/rendering/RenderListBox.h"
@@ -39,8 +40,8 @@ namespace blink {
 
 using namespace HTMLNames;
 
-AXListBoxOption::AXListBoxOption(RenderObject* renderer)
-    : AXRenderObject(renderer)
+AXListBoxOption::AXListBoxOption(RenderObject* renderer, AXObjectCache* axObjectCache)
+    : AXRenderObject(renderer, axObjectCache)
 {
 }
 
@@ -48,9 +49,9 @@ AXListBoxOption::~AXListBoxOption()
 {
 }
 
-PassRefPtr<AXListBoxOption> AXListBoxOption::create(RenderObject* renderer)
+PassRefPtr<AXListBoxOption> AXListBoxOption::create(RenderObject* renderer, AXObjectCache* axObjectCache)
 {
-    return adoptRef(new AXListBoxOption(renderer));
+    return adoptRef(new AXListBoxOption(renderer, axObjectCache));
 }
 
 bool AXListBoxOption::isEnabled() const