Implement type inference of method invocations in Fasta.

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

Index: pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..3d7052a64da9f0c502721b2d6f13684ee62598d1
--- /dev/null
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
@@ -0,0 +1,21 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class I extends core::Object {
+  constructor •() → void
+    : super core::Object::•()
+    ;
+  operator *(self::C other) → core::bool
+    return true;
+}
+abstract class C extends core::Object implements self::I {
+  constructor •() → void
+    : super core::Object::•()
+    ;
+}
+static field self::C c;
+static field core::bool x = self::c.*(self::c);
+static method main() → dynamic {
+  self::c;
+}