Minor cleanup in inferrer folder

pkg/compiler/lib/src/inferrer/debug.dart

Index: pkg/compiler/lib/src/inferrer/debug.dart
diff --git a/runtime/observatory/lib/cli.dart b/pkg/compiler/lib/src/inferrer/debug.dart
similarity index 56%
copy from runtime/observatory/lib/cli.dart
copy to pkg/compiler/lib/src/inferrer/debug.dart
index 607c58a919685c7fca635c1bf5acb02543720582..502f966c6a90a3054caf071abb7e3d6b51309bbb 100644
--- a/runtime/observatory/lib/cli.dart
+++ b/pkg/compiler/lib/src/inferrer/debug.dart
@@ -2,8 +2,10 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library cli;
+/// Values used only for debugging type inference.
+library compiler.src.inferrer.debug;
 
-import 'dart:async';
+bool VERBOSE = false;
+bool PRINT_SUMMARY = false;
+final ANOMALY_WARN = false;
 
-part 'src/cli/command.dart';