Added ClosureMirror to dart:mirrors. Added Dart_ClosureFunction to the

runtime/include/dart_api.h

 // 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.
 
 #ifndef INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
  *
  * Dart is a class-based programming language for creating structured
@@ skipping 1922 matching lines @@
                                                    double value);
 
 // --- Closures ---
 
 /**
  * Is this object a Closure?
  */
 DART_EXPORT bool Dart_IsClosure(Dart_Handle object);
 
 /**
+ * Retrieves the function of a closure.
+ *
+ * \return A handle on the function of the closure, or an error handle if the
+ *   argument is not a closure.
+ */
+DART_EXPORT Dart_Handle Dart_ClosureFunction(Dart_Handle closure);
+
+/**
  * Invokes a Closure with the given arguments.
  *
  * May generate an unhandled exception error.
  *
  * \return If no error occurs during execution, then the result of
  *   invoking the closure is returned. If an error occurs during
  *   execution, then an error handle is returned.
  */
 DART_EXPORT Dart_Handle Dart_InvokeClosure(Dart_Handle closure,
                                            int number_of_arguments,
@@ skipping 628 matching lines @@
 // information that can be used for better profile reports for
 // dynamically generated code.
 DART_EXPORT void Dart_InitPprofSupport();
 DART_EXPORT void Dart_GetPprofSymbolInfo(void** buffer, int* buffer_size);
 
 // Support for generating flow graph compiler debugging output into a file.
 typedef void (*FileWriterFunction)(const char* buffer, int64_t num_bytes);
 DART_EXPORT void Dart_InitFlowGraphPrinting(FileWriterFunction function);
 
 #endif  // INCLUDE_DART_API_H_