Update all Angular libs (run update_all.sh).

third_party/pkg/angular/lib/core/cache.dart

-part of angular.core;
+part of angular.core_internal;
 
 class CacheStats {
   final int capacity;
   final int size;
   final int hits;
   final int misses;
   CacheStats(this.capacity, this.size, this.hits, this.misses);
   String toString() =>
       "[CacheStats: capacity: $capacity, size: $size, hits: $hits, misses: $misses]";
 }
@@ skipping 57 matching lines @@
 
 /**
  * Simple LRU cache.
  *
  * TODO(chirayu):
  * - add docs
  * - add tests
  * - should stringify keys?
  */
 class LruCache<K, V> extends Cache<K, V> {
-  Map<K, V> _entries = new LinkedHashMap<K, V>();
+  final _entries = new LinkedHashMap<K, V>();
   int _capacity;
   int _hits = 0;
   int _misses = 0;
 
   LruCache({int capacity}) {
     this._capacity = (capacity == null) ? 0 : capacity;
   }
 
   V get(K key) {
     V value = _entries[key];
@@ skipping 22 matching lines @@
   }
 
   V remove(K key) => _entries.remove(key);
   void removeAll() => _entries.clear();
   int get capacity => _capacity;
   int get size => _entries.length;
   CacheStats stats() => new CacheStats(capacity, size, _hits, _misses);
   // Debugging helper.
   String toString() => "[$runtimeType: capacity=$capacity, size=$size, items=$_entries]";
 }