Implement spawnFunction from the new isolate api.

runtime/vm/dart_entry.h

 // Copyright (c) 2011, 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.
 
 #ifndef VM_DART_ENTRY_H_
 #define VM_DART_ENTRY_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 
 namespace dart {
 
 // Forward declarations.
 class Array;
 class Closure;
 class Context;
 class Function;
 class Instance;
 class Integer;
+class Library;
 class Object;
 class RawInstance;
 class RawObject;
 class String;
 
 // DartEntry abstracts functionality needed to resolve dart functions
 // and invoke them from C++.
 class DartEntry : public AllStatic {
  public:
   // On success, returns a RawInstance.  On failure, a RawError.
@@ skipping 25 matching lines @@
       const Array& optional_arguments_names);
 };
 
 
 // Utility functions to call from VM into Dart bootstrap libraries.
 // Each may return an exception object.
 class DartLibraryCalls : public AllStatic {
  public:
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* ExceptionCreate(
+      const Library& library,
       const String& exception_name,
       const GrowableArray<const Object*>& arguments);
 
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* ToString(const Instance& receiver);
 
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* Equals(const Instance& left, const Instance& right);
 
   // Returns null on success, a RawError on failure.
   static RawObject* HandleMessage(Dart_Port dest_port_id,
                                   Dart_Port reply_port_id,
                                   const Instance& dart_message);
 };
 
 }  // namespace dart
 
 #endif  // VM_DART_ENTRY_H_