Add page view analytics to Observatory

runtime/observatory/lib/src/app/application.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.
 
 part of app;
 
 /// The observatory application. Instances of this are created and owned
 /// by the observatory_application custom element.
 class ObservatoryApplication extends Observable {
   static ObservatoryApplication app;
@@ skipping 28 matching lines @@
   TraceViewElement _traceView = null;
 
   @reflectable ServiceObject lastErrorOrException;
   @observable ObservableList<ServiceEvent> notifications =
       new ObservableList<ServiceEvent>();
 
   void _initOnce(bool chromium) {
     assert(app == null);
     app = this;
     _registerPages();
+    Analytics.initialize();
     locationManager._init(this);
   }
 
   void removePauseEvents(Isolate isolate) {
     bool isPauseEvent(var event) {
       return (event.eventType == ServiceEvent.kPauseStart ||
               event.eventType == ServiceEvent.kPauseExit ||
               event.eventType == ServiceEvent.kPauseBreakpoint ||
               event.eventType == ServiceEvent.kPauseInterrupted ||
               event.eventType == ServiceEvent.kPauseException);
@@ skipping 157 matching lines @@
 
   _vmDisconnected(VM vm) {
     if (this.vm != vm) {
       // This disconnect event occured *after* a new VM was installed.
       return;
     }
     this.vm = null;
     notifications.add(new ServiceEvent.vmDisconencted());
   }
 }