Update pubspecs and dependencies to get pkgbuild tests working.

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

-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);
-  }
-}
-