Update the Angular/DI tests to latest from github.

third_party/pkg/angular/lib/core_dom/directive.dart

Index: third_party/pkg/angular/lib/core_dom/directive.dart
diff --git a/third_party/pkg/angular/lib/core_dom/directive.dart b/third_party/pkg/angular/lib/core_dom/directive.dart
index 647f954eaf496907abb219bf997a8bcbf8d284d1..1a8bfada6bb168cf0c38559180a31bffbbe5fe55 100644
--- a/third_party/pkg/angular/lib/core_dom/directive.dart
+++ b/third_party/pkg/angular/lib/core_dom/directive.dart
@@ -6,13 +6,6 @@ part of angular.core.dom;
 typedef AttributeChanged(String newValue);
 
 /**
- * Callback function used to notify of text changes.
- */
-abstract class TextChangeListener{
-  call(String text);
-}
-
-/**
  * NodeAttrs is a facade for element attributes. The facade is responsible
  * for normalizing attribute names as well as allowing access to the
  * value of the directive.
@@ -25,14 +18,13 @@ class NodeAttrs {
   NodeAttrs(this.element);
 
   operator [](String attributeName) =>
-      element.attributes[snakecase(attributeName, '-')];
+      element.attributes[attributeName];
 
   operator []=(String attributeName, String value) {
-    var snakeName = snakecase(attributeName, '-');
     if (value == null) {
-      element.attributes.remove(snakeName);
+      element.attributes.remove(attributeName);
     } else {
-      element.attributes[snakeName] = value;
+      element.attributes[attributeName] = value;
     }
     if (_observers != null && _observers.containsKey(attributeName)) {
       _observers[attributeName].forEach((fn) => fn(value));
@@ -56,14 +48,14 @@ class NodeAttrs {
   }
 
   void forEach(void f(String k, String v)) {
-    element.attributes.forEach((k, v) => f(camelcase(k), v));
+    element.attributes.forEach(f);
   }
 
   bool containsKey(String attributeName) =>
-      element.attributes.containsKey(snakecase(attributeName, '-'));
+      element.attributes.containsKey(attributeName);
 
   Iterable<String> get keys =>
-      element.attributes.keys.map((name) => camelcase(name));
+      element.attributes.keys;
 }
 
 /**