Implement type inference for PropertyGet.

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

Index: pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
diff --git a/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
new file mode 100644
index 0000000000000000000000000000000000000000..f8932fe0d6193e5919ecdf88ff9fc28045be1135
--- /dev/null
+++ b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
@@ -0,0 +1,20 @@
+library test;
+import self as self;
+import "dart:core" as core;
+
+class I extends core::Object {
+  constructor •() → void
+    : super core::Object::•()
+    ;
+  method g() → core::bool
+    return true;
+}
+abstract class C extends core::Object implements self::I {
+  constructor •() → void
+    : super core::Object::•()
+    ;
+}
+static field () → core::bool x = self::f().{self::I::g};
+static method f() → self::C
+  return null;
+static method main() → dynamic {}