Implement type inference for super initializers.

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

Index: pkg/front_end/testcases/inference/super_initializer.dart.outline.expect
diff --git a/pkg/front_end/testcases/inference/super_initializer.dart.outline.expect b/pkg/front_end/testcases/inference/super_initializer.dart.outline.expect
new file mode 100644
index 0000000000000000000000000000000000000000..3ad68e3174ab4e8fc5802043153995b33cb38eec
--- /dev/null
+++ b/pkg/front_end/testcases/inference/super_initializer.dart.outline.expect
@@ -0,0 +1,16 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class C extends self::B {
+  constructor •() → void
+    ;
+}
+class B extends core::Object {
+  constructor •(core::int x) → void
+    ;
+}
+static method f<T extends core::Object>() → self::f::T
+  ;
+static method main() → dynamic
+  ;