Add text location in debugger event

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 397 matching lines @@
  */
 DART_EXPORT Dart_Handle Dart_ActivationFrameInfo(
                             Dart_ActivationFrame activation_frame,
                             Dart_Handle* function_name,
                             Dart_Handle* script_url,
                             intptr_t* line_number,
                             intptr_t* library_id);
 
 
 /**
+ * Returns text location of the given activation frame.
+ * \script_url receives a string handle with the url of the
+ *    source script that contains the frame's function.
+ *    Receives a null handle if there is no textual location
+ *    that corresponds to the frame, e.g. for implicitly
+ *    generated constructors.
+ * \token_number receives the line number in the script.
+ *
+ * Any or all of the out parameters above may be NULL.
+ *
+ * Requires there to be a current isolate.
+ *
+ * \return A handle to the True object if no error occurs.
+ *         A handle to the False object if there is no text
+ *         position for the frame.
+ */
+DART_EXPORT Dart_Handle Dart_ActivationFrameGetLocation(
+                            Dart_ActivationFrame activation_frame,
+                            Dart_Handle* script_url,
+                            intptr_t* token_number);
+
+
+/**
  * Returns an array containing all the local variable names and values of
  * the given \activation_frame.
  *
  * Requires there to be a current isolate.
  *
  * \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.
  */
@@ skipping 166 matching lines @@
  * \param request A REST-like string, which uses '/' to separate
  *     parameters. The first parameter is always the status type.
  *
  * \return The requested status as a JSON formatted string, with the
  *     contents defined by the status plug-in. The caller is responsible
  *     for freeing this string.
  */
 DART_EXPORT char* Dart_GetVmStatus(const char* request);
 
 #endif  // INCLUDE_DART_DEBUGGER_API_H_