Improve the casing of Stackmap and Stacktrace.

runtime/observatory/lib/src/elements/nav/notify_exception.dart

 // Copyright (c) 2016, 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.
 
 import 'dart:html';
 import 'dart:async';
 import 'package:observatory/src/elements/helpers/rendering_scheduler.dart';
 import 'package:observatory/src/elements/helpers/tag.dart';
 import 'package:observatory/src/elements/helpers/uris.dart';
 import 'package:observatory/models.dart' show ConnectionException;
@@ skipping 80 matching lines @@
     List<Node> content;
     content = [
       new SpanElement()..text = 'Unexpected exception:',
       new BRElement(),
       new BRElement(),
       new DivElement()..text = exception.toString(),
       new BRElement()
     ];
     if (stacktrace != null) {
       content.addAll([
-        new SpanElement()..text = 'Stacktrace:',
+        new SpanElement()..text = 'StackTrace:',
         new BRElement(),
         new BRElement(),
         new DivElement()..text = stacktrace.toString(),
         new BRElement()
       ]);
     }
     content.addAll([
       new SpanElement()..text = '[',
       new AnchorElement(href: Uris.vmConnect())
         ..text = 'Connect to a different VM',
@@ skipping 10 matching lines @@
   }
 
   void _delete(ExceptionDeleteEvent e) {
     _onDelete.add(e);
   }
 
   void delete() {
     _onDelete.add(new ExceptionDeleteEvent(exception, stacktrace: stacktrace));
   }
 }