Add TraceBuffer log to all Functions (plus small tweaks to function-view)

runtime/bin/vmservice/client/lib/src/elements/log_view.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 log_view_element;
+
+import 'observatory_element.dart';
+import 'package:observatory/service.dart';
+
+import 'package:polymer/polymer.dart';
+
+@CustomTag('log-entry')
+class LogEntryElement extends ObservatoryElement {
+  @published ServiceMap entry;
+
+  @observable String time;
+  @observable String message;
+
+  entryChanged(oldValue) {
+    var t = new DateTime.fromMillisecondsSinceEpoch(entry['time']);
+    time = '${t.hour}:${t.minute}:${t.second}';
+    message = entry['message'];
+  }
+
+  LogEntryElement.created() : super.created();
+}
+
+
+
+@CustomTag('log-view')
+class LogViewElement extends ObservatoryElement {
+  @published ServiceMap log;
+  LogViewElement.created() : super.created();
+}