Fix type in generic type of parameters to SplayTreeMap.fromIterable.

sdk/lib/collection/splay_tree.dart

 // Copyright (c) 2012, 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 dart.collection;
 
 typedef bool _Predicate<T>(T value);
 
 /**
  * A node in a splay tree. It holds the sorting key and the left
@@ skipping 271 matching lines @@
    *
    * For each element of the [iterable] this constructor computes a key/value
    * pair, by applying [key] and [value] respectively.
    *
    * The keys of the key/value pairs do not need to be unique. The last
    * occurrence of a key will simply overwrite any previous value.
    *
    * If no values are specified for [key] and [value] the default is the
    * identity function.
    */
-  factory SplayTreeMap.fromIterable(Iterable<K> iterable,
+  factory SplayTreeMap.fromIterable(Iterable iterable,
       {K key(element), V value(element), int compare(K key1, K key2),
        bool isValidKey(potentialKey) }) {
     SplayTreeMap<K, V> map = new SplayTreeMap<K, V>(compare, isValidKey);
     Maps._fillMapWithMappedIterable(map, iterable, key, value);
     return map;
   }
 
   /**
    * Creates a [SplayTreeMap] associating the given [keys] to [values].
    *
@@ skipping 504 matching lines @@
     return new _SplayTreeNode<E>(node.key)..left = _copyNode(node.left)
                                           ..right = _copyNode(node.right);
   }
 
   void clear() { _clear(); }
 
   Set<E> toSet() => _clone();
 
   String toString() => IterableBase.iterableToFullString(this, '{', '}');
 }