Get some more strong mode type inference tests to pass

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

Index: pkg/front_end/testcases/inference/downwards_inference_on_generic_constructor_arguments_infer_downwards.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/downwards_inference_on_generic_constructor_arguments_infer_downwards.dart.strong.expect b/pkg/front_end/testcases/inference/downwards_inference_on_generic_constructor_arguments_infer_downwards.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..f1e9e9a853beb2e204597955a9248d9fd3126531
--- /dev/null
+++ b/pkg/front_end/testcases/inference/downwards_inference_on_generic_constructor_arguments_infer_downwards.dart.strong.expect
@@ -0,0 +1,54 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class F0<T extends core::Object> extends core::Object {
+  constructor •(core::List<self::F0::T> a) → void
+    : super core::Object::•() {}
+}
+class F1<T extends core::Object> extends core::Object {
+  constructor •({core::List<self::F1::T> a = null}) → void
+    : super core::Object::•() {}
+}
+class F2<T extends core::Object> extends core::Object {
+  constructor •(core::Iterable<self::F2::T> a) → void
+    : super core::Object::•() {}
+}
+class F3<T extends core::Object> extends core::Object {
+  constructor •(core::Iterable<core::Iterable<self::F3::T>> a) → void
+    : super core::Object::•() {}
+}
+class F4<T extends core::Object> extends core::Object {
+  constructor •({core::Iterable<core::Iterable<self::F4::T>> a = null}) → void
+    : super core::Object::•() {}
+}
+static method main() → void {
+  new self::F0::•<core::int>(<core::int>[]);
+  new self::F0::•<core::int>(<core::int>[3]);
+  new self::F0::•<core::int>(<core::int>["hello"]);
+  new self::F0::•<core::int>(<core::int>["hello", 3]);
+  new self::F1::•<core::int>(a: <core::int>[]);
+  new self::F1::•<core::int>(a: <core::int>[3]);
+  new self::F1::•<core::int>(a: <core::int>["hello"]);
+  new self::F1::•<core::int>(a: <core::int>["hello", 3]);
+  new self::F2::•<core::int>(<core::int>[]);
+  new self::F2::•<core::int>(<core::int>[3]);
+  new self::F2::•<core::int>(<core::int>["hello"]);
+  new self::F2::•<core::int>(<core::int>["hello", 3]);
+  new self::F3::•<core::int>(<core::Iterable<core::int>>[]);
+  new self::F3::•<core::int>(<core::Iterable<core::int>>[<core::int>[3]]);
+  new self::F3::•<core::int>(<core::Iterable<core::int>>[<core::int>["hello"]]);
+  new self::F3::•<core::int>(<core::Iterable<core::int>>[<core::int>["hello"], <core::int>[3]]);
+  new self::F4::•<core::int>(a: <core::Iterable<core::int>>[]);
+  new self::F4::•<core::int>(a: <core::Iterable<core::int>>[<core::int>[3]]);
+  new self::F4::•<core::int>(a: <core::Iterable<core::int>>[<core::int>["hello"]]);
+  new self::F4::•<core::int>(a: <core::Iterable<core::int>>[<core::int>["hello"], <core::int>[3]]);
+  new self::F3::•<dynamic>(<core::Iterable<dynamic>>[]);
+  self::F3<core::int> f31 = new self::F3::•<core::int>(<core::List<core::int>>[<core::int>[3]]);
+  self::F3<core::String> f32 = new self::F3::•<core::String>(<core::List<core::String>>[<core::String>["hello"]]);
+  self::F3<core::Object> f33 = new self::F3::•<core::Object>(<core::List<core::Object>>[<core::String>["hello"], <core::int>[3]]);
+  new self::F4::•<dynamic>(a: <core::Iterable<dynamic>>[]);
+  new self::F4::•<core::int>(a: <core::List<core::int>>[<core::int>[3]]);
+  new self::F4::•<core::String>(a: <core::List<core::String>>[<core::String>["hello"]]);
+  new self::F4::•<core::Object>(a: <core::List<core::Object>>[<core::String>["hello"], <core::int>[3]]);
+}