Fix overly-strict parameter checking of _getCallSiteData.

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

 // Copyright (c) 2014, 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 heap_profile_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'observatory_element.dart';
 import 'package:observatory/app.dart';
@@ skipping 217 matching lines @@
     for (var i = 1; i < row.values.length; i++) {
       if (SPACER_COLUMNS.contains(i)) {
         // Skip spacer columns.
         continue;
       }
       var cell = tr.children[i];
       cell.title = row.values[i].toString();
       cell.text = classTable.getFormattedValue(rowIndex, i);
       if (i > 1) {  // Numbers.
         cell.style.textAlign = 'right';
+        cell.style.paddingLeft = '1em';
       }
     }
   }
 
   void _updateClassTableInDom() {
     assert(_classTableBody != null);
     // Resize DOM table.
     if (_classTableBody.children.length > classTable.sortedRows.length) {
       // Shrink the table.
       var deadRows =
@@ skipping 117 matching lines @@
   }
 
   @observable String formattedTotalCollectionTime(bool newSpace) {
     if (profile == null) {
       return '';
     }
     var heap = newSpace ? isolate.newSpace : isolate.oldSpace;
     return '${Utils.formatSeconds(heap.totalCollectionTimeInSeconds)} secs';
   }
 }