Revert "Fix observatory tests broken by running dartfmt."

runtime/lib/immutable_map.dart

Index: runtime/lib/immutable_map.dart
diff --git a/runtime/lib/immutable_map.dart b/runtime/lib/immutable_map.dart
index 3dc14fa3fdaff2f5368c2a9bf1574bfceee96eb0..87c1689c15436ac6d70d5b078039da84adbbcc14 100644
--- a/runtime/lib/immutable_map.dart
+++ b/runtime/lib/immutable_map.dart
@@ -9,13 +9,14 @@ class _ImmutableMap<K, V> implements Map<K, V> {
   const _ImmutableMap._create(_ImmutableList keyValuePairs)
       : _kvPairs = keyValuePairs;
 
+
   V operator [](Object key) {
     // To preserve the key-value order of the map literal, the keys are
     // not sorted. Need to do linear search or implement an additional
     // lookup table.
     for (int i = 0; i < _kvPairs.length - 1; i += 2) {
       if (key == _kvPairs[i]) {
-        return _kvPairs[i + 1];
+        return _kvPairs[i+1];
       }
     }
     return null;
@@ -33,7 +34,7 @@ class _ImmutableMap<K, V> implements Map<K, V> {
 
   void forEach(void f(K key, V value)) {
     for (int i = 0; i < _kvPairs.length; i += 2) {
-      f(_kvPairs[i], _kvPairs[i + 1]);
+      f(_kvPairs[i], _kvPairs[i+1]);
     }
   }