Add an API function to get a debugger stack trace from an error handle.

tools/dom/src/native_DOMImplementation.dart

 // 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.
 
 part of html;
 
 class _ConsoleVariables {
   Map<String, Object> _data = new Map<String, Object>();
 
   /**
@@ skipping 52 matching lines @@
     if (map['alpha'] == true) result |= 0x01;
     if (map['depth'] == true) result |= 0x02;
     if (map['stencil'] == true) result |= 0x4;
     if (map['antialias'] == true) result |= 0x08;
     if (map['premultipliedAlpha'] == true) result |= 0x10;
     if (map['preserveDrawingBuffer'] == true) result |= 0x20;
 
     return result;
   }
 
-  static List parseStackTrace(StackTrace stackTrace) {
-    final regExp = new RegExp(r'#\d\s+(.*) \((.*):(\d+):(\d+)\)');
-    List result = [];
-    for (var match in regExp.allMatches(stackTrace.toString())) {
-      result.add([match.group(1), match.group(2), int.parse(match.group(3)), int.parse(match.group(4))]);
-    }
-    return result;
-  }
-
-  static List captureParsedStackTrace() {
-    try {
-      // Throwing an exception is the only way to generate a stack trace.
-      throw new Exception();
-    } catch (e, stackTrace) {
-      return parseStackTrace(stackTrace);
-    }
-  }
-
   static void populateMap(Map result, List list) {
     for (int i = 0; i < list.length; i += 2) {
       result[list[i]] = list[i + 1];
     }
   }
 
   static bool isMap(obj) => obj is Map;
 
   static List toListIfIterable(obj) => obj is Iterable ? obj.toList() : null;
 
@@ skipping 519 matching lines @@
   _scheduleImmediateHelper._schedule(callback);
 };
 
 get _pureIsolateScheduleImmediateClosure => ((void callback()) =>
   throw new UnimplementedError("scheduleMicrotask in background isolates "
                                "are not supported in the browser"));
 
 void _initializeCustomElement(Element e) {
   _Utils.initializeCustomElement(e);
 }