Remove unsafe mode to enable es3 api by default for WebGL2 and ES3 context

third_party/WebKit/Source/web/WebRuntimeFeatures.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 266 matching lines @@
 void WebRuntimeFeatures::enableReloadwithoutSubResourceCacheRevalidation(
     bool enable) {
   RuntimeEnabledFeatures::setReloadwithoutSubResourceCacheRevalidationEnabled(
       enable);
 }
 
 void WebRuntimeFeatures::enablePushMessaging(bool enable) {
   RuntimeEnabledFeatures::setPushMessagingEnabled(enable);
 }
 
-void WebRuntimeFeatures::enableUnsafeES3APIs(bool enable) {
-  RuntimeEnabledFeatures::setUnsafeES3APIsEnabled(enable);
-}
+// void WebRuntimeFeatures::enableUnsafeES3APIs(bool enable) {
+//  RuntimeEnabledFeatures::setUnsafeES3APIsEnabled(enable);
+// }
 
 void WebRuntimeFeatures::enableWebVR(bool enable) {
   RuntimeEnabledFeatures::setWebVREnabled(enable);
 }
 
 void WebRuntimeFeatures::enableNewMediaPlaybackUi(bool enable) {
   RuntimeEnabledFeatures::setNewMediaPlaybackUiEnabled(enable);
 }
 
 void WebRuntimeFeatures::enablePresentationAPI(bool enable) {
@@ skipping 48 matching lines @@
   RuntimeEnabledFeatures::setTimerThrottlingForHiddenFramesEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableSendBeaconThrowForBlobWithNonSimpleType(
     bool enable) {
   RuntimeEnabledFeatures::setSendBeaconThrowForBlobWithNonSimpleTypeEnabled(
       enable);
 }
 
 }  // namespace blink