Support a runtime flag for navigator content utils feature

Source/web/WebRuntimeFeatures.cpp

Index: Source/web/WebRuntimeFeatures.cpp
diff --git a/Source/web/WebRuntimeFeatures.cpp b/Source/web/WebRuntimeFeatures.cpp
index 8c3ae169016cd832c70010c81f8e3044d7d9fe52..f565fee99b47df479fb66ae1a109abaac219cb92 100644
--- a/Source/web/WebRuntimeFeatures.cpp
+++ b/Source/web/WebRuntimeFeatures.cpp
@@ -377,6 +377,22 @@ bool WebRuntimeFeatures::isHTMLImportsEnabled()
     return RuntimeEnabledFeatures::htmlImportsEnabled();
 }
 
+void WebRuntimeFeatures::enableNavigatorContentUtils(bool enable)
+{
+#if ENABLE(NAVIGATOR_CONTENT_UTILS)
+    RuntimeEnabledFeatures::setNavigatorContentUtilsEnabled(enable);
+#endif
+}
+
+bool WebRuntimeFeatures::isNavigatorContentUtilsEnabled()
+{
+#if ENABLE(NAVIGATOR_CONTENT_UTILS)
+    return RuntimeEnabledFeatures::navigatorContentUtilsEnabled();
+#else
+    return false;
+#endif
+}
+
 void WebRuntimeFeatures::enableCustomElements(bool enable)
 {
     RuntimeEnabledFeatures::setCustomElementsEnabled(enable);