Only save what's needed.

dart/site/try/src/interaction_manager.dart

Index: dart/site/try/src/interaction_manager.dart
diff --git a/dart/site/try/src/interaction_manager.dart b/dart/site/try/src/interaction_manager.dart
index 3b59c1fd791ec9c9fd76ab9170cf06e5ba4e4602..35a5071f551e8dfdb73973acca166f7914396a05 100644
--- a/dart/site/try/src/interaction_manager.dart
+++ b/dart/site/try/src/interaction_manager.dart
@@ -94,7 +94,7 @@ abstract class InteractionManager {
   //
   // Simplicity in UI is in the eye of the beholder, not the implementor. Great
   // 'natural UI' is usually achieved with substantial implementation
-  // complexity that doesn't modularise well and has nasty complicated state
+  // complexity that doesn't modularize well and has nasty complicated state

[ahe, 2014/05/14 11:01:24]

Sometimes I encounter a bug in Chrome and it turns on spellchecking although it
shouldn't.  But it helped me find a typo :-)

   // dependencies.
   //
   // In rare cases, some UI components can be independent of this state
@@ -489,6 +489,7 @@ class InitialState extends InteractionState {
           ..stop()
           ..reset();
       context.unitsToSave.addAll(context.modifiedUnits);
+      context.modifiedUnits.clear();
       saveUnits();
     }
     if (!settings.compilationPaused &&