Correctly infer the return context while compiling a factory constructor.

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

Index: pkg/front_end/testcases/inference/constructors_infer_from_arguments_factory_calls_constructor.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/constructors_infer_from_arguments_factory_calls_constructor.dart.strong.expect b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_factory_calls_constructor.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..947ae4e7d128fd64b9aa1be72c6d629072a5f1bf
--- /dev/null
+++ b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_factory_calls_constructor.dart.strong.expect
@@ -0,0 +1,15 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class A<T extends core::Object> extends core::Object {
+  field self::A<self::A::T> f = new self::A::•<self::A::T>();
+  constructor •() → void
+    : super core::Object::•()
+    ;
+  static factory factory<T extends core::Object>() → dynamic
+    return new self::A::•<self::A::factory::T>();
+  method m() → self::A<self::A::T>
+    return new self::A::•<self::A::T>();
+}
+static method main() → dynamic {}