Reapply "Add support for generic function type syntax, part 1"

pkg/analyzer/test/src/task/dart_test.dart

Index: pkg/analyzer/test/src/task/dart_test.dart
diff --git a/pkg/analyzer/test/src/task/dart_test.dart b/pkg/analyzer/test/src/task/dart_test.dart
index 3b81e2687be914c3285d16ff1aa06bdb092b0a75..64901f945e7084be3b1d31949c38dee49cab9129 100644
--- a/pkg/analyzer/test/src/task/dart_test.dart
+++ b/pkg/analyzer/test/src/task/dart_test.dart
@@ -4541,7 +4541,10 @@ typedef F<T extends String>();
 
   void _assertTypeParameterBound(TypeParameter typeParameter,
       String expectedBoundTypeString, String expectedBoundElementName) {
-    TypeName boundNode = typeParameter.bound;
+    TypeAnnotation bound = typeParameter.bound;
+    // TODO(brianwilkerson) Extend this to support function types as bounds.
+    expect(bound, new isInstanceOf<TypeName>());
+    TypeName boundNode = bound;
     Identifier boundName = boundNode.name;
     expect(boundNode.type.toString(), expectedBoundTypeString);
     expect(boundName.staticType.toString(), expectedBoundTypeString);