Add a flag for enabling/disabling the navigator content utils

content/child/runtime_features.cc

Index: content/child/runtime_features.cc
diff --git a/content/child/runtime_features.cc b/content/child/runtime_features.cc
index 133a366f40fb13492a983c4ff609c97067816e2a..86d533baa0cc4fa3677b7c675fe44fac1520b0ca 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -43,6 +43,8 @@ static void SetRuntimeFeatureDefaultsForPlatform() {
   WebRuntimeFeatures::enableNotifications(false);
   // Android does not yet support SharedWorker. crbug.com/154571
   WebRuntimeFeatures::enableSharedWorker(false);
+  // Android does not yet support NavigatorContentUtils.
+  WebRuntimeFeatures::enableNavigatorContentUtils(false);
 #endif  // defined(OS_ANDROID)
 }
 
@@ -64,6 +66,9 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (command_line.HasSwitch(switches::kDisableDesktopNotifications))
     WebRuntimeFeatures::enableNotifications(false);
 
+  if (command_line.HasSwitch(switches::kDisableNavigatorContentUtils))
+    WebRuntimeFeatures::enableNavigatorContentUtils(false);
+
   if (command_line.HasSwitch(switches::kDisableLocalStorage))
     WebRuntimeFeatures::enableLocalStorage(false);