Switch to using SourceLocation universally in service protocol.

runtime/observatory/lib/src/elements/observatory_element.dart

 // Copyright (c) 2013, 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.
 
 library observatory_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/app.dart';
 import 'package:observatory/service.dart';
@@ skipping 112 matching lines @@
   String formatTimePrecise(double time) => Utils.formatTimePrecise(time);
   String formatTimeMilliseconds(int millis) =>
       Utils.formatTimeMilliseconds(millis);
   String formatTime(double time) => Utils.formatTime(time);
 
   String formatSeconds(double x) => Utils.formatSeconds(x);
 
 
   String formatSize(int bytes) => Utils.formatSize(bytes);
 
-  String fileAndLine(Map frame) {
-    var file = frame['script'].name;
-    var shortFile = file.substring(file.lastIndexOf('/') + 1);
-    return "${shortFile}:${frame['line']}";
-  }
-
   int parseInt(String value) => int.parse(value);
 
   String asStringLiteral(String value, [bool wasTruncated=false]) {
     var result = new List();
     result.add("'".codeUnitAt(0));
     for (int codeUnit in value.codeUnits) {
       if (codeUnit == '\n'.codeUnitAt(0)) result.addAll('\\n'.codeUnits);
       else if (codeUnit == '\r'.codeUnitAt(0)) result.addAll('\\r'.codeUnits);
       else if (codeUnit == '\f'.codeUnitAt(0)) result.addAll('\\f'.codeUnits);
       else if (codeUnit == '\b'.codeUnitAt(0)) result.addAll('\\b'.codeUnits);
@@ skipping 72 matching lines @@
         node.style.visibility = 'hidden';
       }
       Timer.run(() {
         for (var node in noCopyNodes) {
           node.style.visibility = 'visible';
         }
       });
     });
   }
 }