Add Google Charts to Observatory and use it in allocation profiler

runtime/bin/vmservice/client/lib/src/observatory/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 observatory;
 
 /// The observatory application. Instances of this are created and owned
 /// by the observatory_application custom element.
 class ObservatoryApplication extends Observable {
   @observable final LocationManager locationManager;
@@ skipping 13 matching lines @@
       requestManager = new PostMessageRequestManager(),
       isolateManager = new IsolateManager() {
     _setup();
   }
 
   ObservatoryApplication() :
       locationManager = new LocationManager(),
       requestManager = new HttpRequestManager(),
       isolateManager = new IsolateManager() {
     _setup();
-    Logger.root.level = Level.INFO;
-    Logger.root.onRecord.listen((LogRecord rec) {
-      print('${rec.level.name}: ${rec.time}: ${rec.message}');
-    });
   }
 
   /// Return the [Isolate] with [id].
   Isolate getIsolate(int id) {
     return isolateManager.isolates[id];
   }
 
   /// Return the name of the isolate with [id].
   String getIsolateName(int id) {
     var isolate = getIsolate(id);
@@ skipping 11 matching lines @@
       return '${y.toStringAsFixed(1)} MB';
     } else if (x > 2 * KB) {
       var y = x / KB;
       return '${y.toStringAsFixed(1)} KB';
     }
     var y = x.toDouble();
     return '${y.toStringAsFixed(1)} B';
   }
 
   static String timeUnits(double x) {
-    return x.toStringAsFixed(4);
+    return x.toStringAsFixed(2);
   }
 }