Update the Angular/DI tests to latest from github.

third_party/pkg/angular/lib/core/parser/lexer.dart

Index: third_party/pkg/angular/lib/core/parser/lexer.dart
diff --git a/third_party/pkg/angular/lib/core/parser/lexer.dart b/third_party/pkg/angular/lib/core/parser/lexer.dart
index 3f99b521ed4164c04188d7fa3309f5e90c5a3d07..3361c8f53ae420ce14e5b25759c23d785675ad1f 100644
--- a/third_party/pkg/angular/lib/core/parser/lexer.dart
+++ b/third_party/pkg/angular/lib/core/parser/lexer.dart
@@ -56,13 +56,13 @@ class Scanner {
   Token scanToken() {
     // Skip whitespace.
     while (peek <= $SPACE) {
-    if (++index >= length) {
-      peek = $EOF;
-      return null;
-    } else {
-      peek = input.codeUnitAt(index);
+      if (++index >= length) {
+        peek = $EOF;
+        return null;
+      } else {
+        peek = input.codeUnitAt(index);
+      }
     }
-  }
 
     // Handle identifiers and numbers.
     if (isIdentifierStart(peek)) return scanIdentifier();
@@ -112,6 +112,7 @@ class Scanner {
 
     String character = new String.fromCharCode(peek);
     error('Unexpected character [$character]');
+    return null;
   }
 
   Token scanCharacter(int start, String string) {