Revert "Update all Angular libs (run update_all.sh)."

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

Index: third_party/pkg/angular/lib/core/filter.dart
diff --git a/third_party/pkg/angular/lib/core/filter.dart b/third_party/pkg/angular/lib/core/filter.dart
new file mode 100644
index 0000000000000000000000000000000000000000..6b8740754aae442287027965d76ccda2c31f741a
--- /dev/null
+++ b/third_party/pkg/angular/lib/core/filter.dart
@@ -0,0 +1,53 @@
+part of angular.core;
+
+/**
+ * Use @[NgFilter] annotation to register a new filter. A filter is a class
+ * with a [call] method (a callable function).
+ *
+ * Usage:
+ *
+ *     // Declaration
+ *     @NgFilter(name:'myFilter')
+ *     class MyFilter {
+ *       call(valueToFilter, optArg1, optArg2) {
+ *          return ...;
+ *       }
+ *     }
+ *
+ *
+ *     // Registration
+ *     var module = ...;
+ *     module.type(MyFilter);
+ *
+ *
+ *     <!-- Usage -->
+ *     <span>{{something | myFilter:arg1:arg2}}</span>
+ */
+class NgFilter {
+  final String name;
+
+  const NgFilter({this.name});
+
+  int get hashCode => name.hashCode;
+  bool operator==(other) => this.name == other.name;
+
+  toString() => 'NgFilter: $name';
+}
+
+/**
+ * Registry of filters at runtime.
+ */
+@NgInjectableService()
+class FilterMap extends AnnotationMap<NgFilter> {
+  Injector _injector;
+  FilterMap(Injector injector, MetadataExtractor extractMetadata) :
+    this._injector = injector,
+    super(injector, extractMetadata);
+
+  call(String name) {
+    var filter = new NgFilter(name:name);
+    var filterType = this[filter];
+    return _injector.get(filterType);
+  }
+}
+