Add type inference of annotations.

pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect

Index: pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
new file mode 100644
index 0000000000000000000000000000000000000000..b3bce0461cda138036cb7e834d0e98900d83e0da
--- /dev/null
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
@@ -0,0 +1,23 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+typedef F = <T extends core::Object>() → void;
+class Foo extends core::Object {
+  const constructor •(core::List<core::String> l) → void
+    ;
+}
+class C<T extends core::Object> extends core::Object {
+  constructor •() → void
+    ;
+}
+class D extends core::Object {
+  constructor •() → void
+    ;
+  method m<T extends core::Object>() → void
+    ;
+}
+static method f<T extends core::Object>() → void
+  ;
+static method main() → dynamic
+  ;