Make Dart_ScriptGetTokenInfo account for line_offset() and col_offset()

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 129 matching lines @@
                             Dart_Handle script_url_in);
 
 
 /**
  * Returns an array containing line number and token offset info
  * for the given script.
  *
  * Returns an array of numbers. Null values indicate the beginning of
  * a new line. The first number after null is the line number.
  * The line number is followed by pairs of numbers, with the first value
- * being the "token offset" and the second value being the character offset
- * of the token relative to the beginning of the script.
+ * being the "token offset" and the second value being the column number
+ * of the token.
  * The "token offset" is a value that is used to indicate a location
  * in code, similarly to a "PC" address.
  * Source lines with no tokens are omitted.
  *
  * Requires there to be a current isolate.
  *
  * \return A handle to an array or an error object.
  */
 DART_EXPORT Dart_Handle Dart_ScriptGetTokenInfo(
                             intptr_t library_id,
@@ skipping 514 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_