Simplify SharedWorkerRepository code (Chromium side)

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 aebad1cc88855694309f4056fa9421b01d313dd7..158ec7c99c7ceadfd8e67eab1cb40adfdbc3bfb8 100644
--- a/content/child/runtime_features.cc
+++ b/content/child/runtime_features.cc
@@ -44,6 +44,8 @@ static void SetRuntimeFeatureDefaultsForPlatform() {
   WebRuntimeFeatures::enableDataListElement(false);
   // Android does not yet support the Web Notification API. crbug.com/115320
   WebRuntimeFeatures::enableNotifications(false);
+  // Android does not yet support SharedWorker. crbug.com/154571
+  WebRuntimeFeatures::enableSharedWorker(false);
 #endif  // defined(OS_ANDROID)
 }
 
@@ -80,6 +82,9 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (command_line.HasSwitch(switches::kDisableUnprefixedMediaSource))
     WebRuntimeFeatures::enableMediaSource(false);
 
+  if (command_line.HasSwitch(switches::kDisableSharedWorkers))
+    WebRuntimeFeatures::enableSharedWorker(false);
+
 #if defined(OS_ANDROID)
   if (command_line.HasSwitch(switches::kDisableWebRTC)) {
     WebRuntimeFeatures::enableMediaStream(false);