Update all Angular libs (run update_all.sh).

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

+/**
+ * Angular class annotations for Directives, Formatters, and Injectables.
+ */
+library angular.core.annotation;
+
+import "dart:html" show ShadowRoot;
+
+export "package:angular/core/annotation_src.dart" show
+    AttachAware,
+    DetachAware,
+    ShadowRootAware,
+
+    Formatter,
+    Injectable,
+
+    Directive,
+    Component,
+    Controller,
+    Decorator,
+
+    DirectiveAnnotation,
+    NgAttr,
+    NgCallback,
+    NgOneWay,
+    NgOneWayOneTime,
+    NgTwoWay;
+
+
+/**
+ * Implementing components [onShadowRoot] method will be called when
+ * the template for the component has been loaded and inserted into Shadow DOM.
+ * It is guaranteed that when [onShadowRoot] is invoked, that shadow DOM
+ * has been loaded and is ready.
+ */
+abstract class ShadowRootAware {
+  void onShadowRoot(ShadowRoot shadowRoot);
+}
+