Implement computedRole and computedName (behind a flag)

Source/core/testing/InternalSettings.cpp

Index: Source/core/testing/InternalSettings.cpp
diff --git a/Source/core/testing/InternalSettings.cpp b/Source/core/testing/InternalSettings.cpp
index 4ccfa6df6498facd50389ccea9bf37191a98988a..3b82350f3d1e44791714632b8c2e61d846a0fc86 100644
--- a/Source/core/testing/InternalSettings.cpp
+++ b/Source/core/testing/InternalSettings.cpp
@@ -75,12 +75,14 @@ InternalSettings::Backup::Backup(Settings* settings)
     , m_originalLayerSquashingEnabled(settings->layerSquashingEnabled())
     , m_originalPseudoClassesInMatchingCriteriaInAuthorShadowTreesEnabled(RuntimeEnabledFeatures::pseudoClassesInMatchingCriteriaInAuthorShadowTreesEnabled())
     , m_originalImageColorProfilesEnabled(RuntimeEnabledFeatures::imageColorProfilesEnabled())
+    , m_originalExperimentalAccessibilityFeaturesEnabled(RuntimeEnabledFeatures::experimentalAccessibilityFeaturesEnabled())
 {
 }
 
 void InternalSettings::Backup::restoreTo(Settings* settings)
 {
     RuntimeEnabledFeatures::setAuthorShadowDOMForAnyElementEnabled(m_originalAuthorShadowDOMForAnyElementEnabled);
+    RuntimeEnabledFeatures::setExperimentalAccessibilityFeaturesEnabled(m_originalExperimentalAccessibilityFeaturesEnabled);
     RuntimeEnabledFeatures::setExperimentalContentSecurityPolicyFeaturesEnabled(m_originalCSP);
     RuntimeEnabledFeatures::setLaxMixedContentCheckingEnabled(m_originalLaxMixedContentCheckingEnabled);
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(m_originalOverlayScrollbarsEnabled);
@@ -184,6 +186,11 @@ void InternalSettings::setAuthorShadowDOMForAnyElementEnabled(bool isEnabled)
     RuntimeEnabledFeatures::setAuthorShadowDOMForAnyElementEnabled(isEnabled);
 }
 
+void InternalSettings::setExperimentalAccessibilityFeaturesEnabled(bool enabled)
+{
+    RuntimeEnabledFeatures::setExperimentalAccessibilityFeaturesEnabled(enabled);
+}
+
 void InternalSettings::setExperimentalContentSecurityPolicyFeaturesEnabled(bool enabled)
 {
     RuntimeEnabledFeatures::setExperimentalContentSecurityPolicyFeaturesEnabled(enabled);