Implement type inference of constructor invocations in Fasta.

pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect

Index: pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..2cdb834d20166adb23e082a67d027dd083a1b9f7
--- /dev/null
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
@@ -0,0 +1,18 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class C<T extends core::Object> extends self::D<self::C::T> {
+  constructor •() → void
+    : super self::D::•()
+    ;
+  method f(dynamic x) → dynamic {}
+}
+class D<T extends core::Object> extends core::Object {
+  constructor •() → void
+    : super core::Object::•()
+    ;
+  method f(dynamic u) → () → dynamic
+    return null;
+}
+static method main() → dynamic {}