Infer the types of initializing formals from the corresponding fields.

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

Index: pkg/front_end/testcases/inference/constructors_infer_from_arguments_const_with_upper_bound.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/constructors_infer_from_arguments_const_with_upper_bound.dart.strong.expect b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_const_with_upper_bound.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..97e2ca433f9f0861935f457a5f84e9489b31fcf5
--- /dev/null
+++ b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_const_with_upper_bound.dart.strong.expect
@@ -0,0 +1,20 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class C<T extends core::num> extends core::Object {
+  final field self::C::T x;
+  const constructor •(self::C::T x) → void
+    : self::C::x = x, super core::Object::•()
+    ;
+}
+class D<T extends core::num> extends core::Object {
+  const constructor •() → void
+    : super core::Object::•()
+    ;
+}
+static method main() → void {
+  const self::C<core::int> c = const self::C::•<core::int>(0);
+  self::C<core::int> c2 = c;
+  const self::D<core::int> d = const self::D::•<core::int>();
+}