Visual refresh of allocation profile page

runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart

Index: runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart
diff --git a/runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart b/runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart
index c55b1d1adeeb42f8b9e854cada076dbe4ee30ab6..5199f83eb839ac39c793da5e987e1ad4a8678676 100644
--- a/runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart
+++ b/runtime/bin/vmservice/client/lib/src/elements/isolate_view.dart
@@ -99,14 +99,16 @@ class IsolateViewElement extends ObservatoryElement {
     });
   }
 
-  void enteredView() {
-    super.enteredView();
+  @override
+  void attached() {
+    super.attached();
     // Start a timer to update the isolate summary once a second.
     _updateTimer = new Timer(new Duration(seconds: 1), _updateTagProfile);
   }
 
-  void leftView() {
-    super.leftView();
+  @override
+  void detached() {
+    super.detached();
     if (_updateTimer != null) {
       _updateTimer.cancel();
       _updateTimer = null;