Implement eager instantiation and canonicalization of type arguments at run

runtime/lib/isolate.cc

 // 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.
 
 #include "platform/assert.h"
 #include "vm/bootstrap_natives.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 43 matching lines @@
   const Object& result =
       Object::Handle(isolate, DartEntry::InvokeFunction(func, args));
   if (!result.IsError()) {
     PortMap::SetLive(port_id);
   }
   return result.raw();
 }
 
 
 DEFINE_NATIVE_ENTRY(RawReceivePortImpl_factory, 1) {
-  ASSERT(AbstractTypeArguments::CheckedHandle(
-      arguments->NativeArgAt(0)).IsNull());
+  ASSERT(TypeArguments::CheckedHandle(arguments->NativeArgAt(0)).IsNull());
   Dart_Port port_id =
       PortMap::CreatePort(arguments->isolate()->message_handler());
   const Object& port = Object::Handle(ReceivePortCreate(port_id));
   if (port.IsError()) {
     Exceptions::PropagateError(Error::Cast(port));
   }
   return port.raw();
 }
 
 
@@ skipping 169 matching lines @@
 
   // The control port is being accessed as a regular port from Dart code. This
   // is most likely due to the _startIsolate code in dart:isolate. Account for
   // this by increasing the number of open control ports.
   isolate->message_handler()->increment_control_ports();
 
   return port.raw();
 }
 
 }  // namespace dart