Format all dart: library files

sdk/lib/collection/hash_map.dart

Index: sdk/lib/collection/hash_map.dart
diff --git a/sdk/lib/collection/hash_map.dart b/sdk/lib/collection/hash_map.dart
index 6824328822877956769363a7d8861963d5de7cce..f46220b903ac14f8f9355eb4133c2520476d09c3 100644
--- a/sdk/lib/collection/hash_map.dart
+++ b/sdk/lib/collection/hash_map.dart
@@ -83,9 +83,10 @@ abstract class HashMap<K, V> implements Map<K, V> {
    * If you supply one of [equals] and [hashCode],
    * you should generally also to supply the other.
    */
-  external factory HashMap({bool equals(K key1, K key2),
-                            int hashCode(K key),
-                            bool isValidKey(potentialKey)});
+  external factory HashMap(
+      {bool equals(K key1, K key2),
+      int hashCode(K key),
+      bool isValidKey(potentialKey)});
 
   /**
    * Creates an unordered identity-based map.
@@ -102,7 +103,9 @@ abstract class HashMap<K, V> implements Map<K, V> {
    */
   factory HashMap.from(Map other) {
     HashMap<K, V> result = new HashMap<K, V>();
-    other.forEach((k, v) { result[k as Object/*=K*/] = v as Object/*=V*/; });
+    other.forEach((k, v) {
+      result[k as Object/*=K*/] = v as Object/*=V*/;
+    });
     return result;
   }