Add class id to debugger stack trace

runtime/include/dart_debugger_api.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 INCLUDE_DART_DEBUGGER_API_H_
 #define INCLUDE_DART_DEBUGGER_API_H_
 
 #include "include/dart_api.h"
 
 typedef struct _Dart_Breakpoint* Dart_Breakpoint;
@@ skipping 461 matching lines @@
  * \return A handle to an array containing variable names and
  * corresponding values. The array is empty if the activation frame has
  * no variables. If non-empty, variable names are at array offsets 2*n,
  * values at offset 2*n+1.
  */
 DART_EXPORT Dart_Handle Dart_GetLocalVariables(
                             Dart_ActivationFrame activation_frame);
 
 
 /**
+ * Returns origin class of a function.
+ *
+ * Requires there to be a current isolate.
+ * 
+ * \return Returns the class id (a handle to an integer) of the class in
+ * which \function is defined. Returns a null handle if \function is defined
+ * at the top level. Returns an error object otherwise.
+ */
+DART_EXPORT Dart_Handle Dart_GetFunctionOrigin(Dart_Handle function);
+
+
+/**
  * Returns an array containing all the global variable names and values of
  * the library with given \library_id.
  *
  * Requires there to be a current isolate.
  *
  * \return A handle to an array containing variable names and
  * corresponding values. Variable names are at array offsets 2*n,
  * values at offset 2*n+1.
  */
 DART_EXPORT Dart_Handle Dart_GetGlobalVariables(intptr_t library_id);
@@ skipping 206 matching lines @@
 
 
 /**
  * Returns the isolate id for an isolate.
  *
  * \return The Dart_IsolateId value corresponding to the isolate.
  */
 DART_EXPORT Dart_IsolateId Dart_GetIsolateId(Dart_Isolate isolate);
 
 #endif  // INCLUDE_DART_DEBUGGER_API_H_