unfork DDC's copy of most SDK libraries

pkg/dev_compiler/tool/input_sdk/private/isolate_helper.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart._isolate_helper;
 
 import 'dart:_js_embedded_names' show
     CLASS_ID_EXTRACTOR,
     CLASS_FIELDS_EXTRACTOR,
     CURRENT_SCRIPT,
@@ skipping 364 matching lines @@
   }
 
   void handlePing(SendPort responsePort, int pingType) {
     if (pingType == Isolate.IMMEDIATE ||
         (pingType == Isolate.BEFORE_NEXT_EVENT &&
          !_isExecutingEvent)) {
       responsePort.send(null);
       return;
     }
     void respond() { responsePort.send(null); }
-    if (pingType == Isolate.AS_EVENT) {
-      _globalState.topEventLoop.enqueue(this, respond, "ping");
-      return;
-    }
     assert(pingType == Isolate.BEFORE_NEXT_EVENT);
     if (_scheduledControlEvents == null) {
       _scheduledControlEvents = new Queue();
     }
     _scheduledControlEvents.addLast(respond);
   }
 
   void handleKill(Capability authentification, int priority) {
     if (this.terminateCapability != authentification) return;
     if (priority == Isolate.IMMEDIATE ||
         (priority == Isolate.BEFORE_NEXT_EVENT &&
          !_isExecutingEvent)) {
       kill();
       return;
     }
-    if (priority == Isolate.AS_EVENT) {
-      _globalState.topEventLoop.enqueue(this, kill, "kill");
-      return;
-    }
     assert(priority == Isolate.BEFORE_NEXT_EVENT);
     if (_scheduledControlEvents == null) {
       _scheduledControlEvents = new Queue();
     }
     _scheduledControlEvents.addLast(kill);
   }
 
   void addErrorListener(SendPort port) {
     errorPorts.add(port);
   }
@@ skipping 1028 matching lines @@
   }
 
   bool operator==(Object other) {
     if (identical(other, this)) return true;
     if (other is CapabilityImpl) {
       return identical(_id, other._id);
     }
     return false;
   }
 }