Parameterize and move JumpTarget/LabelDefition to elements/jumps.dart

pkg/compiler/lib/src/ssa/graph_builder.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 import '../closure.dart' show ClosureClassMaps;
 import '../constants/constant_system.dart';
 import '../common/codegen.dart' show CodegenRegistry;
 import '../common_elements.dart';
 import '../compiler.dart';
 import '../deferred_load.dart';
 import '../diagnostics/diagnostic_listener.dart';
 import '../elements/elements.dart';
 import '../elements/entities.dart' show Entity, Local, MemberEntity;
+import '../elements/jumps.dart';
 import '../elements/types.dart';
 import '../js_backend/backend.dart';
 import '../js_backend/backend_usage.dart';
 import '../js_backend/constant_handler_javascript.dart';
 import '../js_backend/namer.dart';
 import '../js_backend/native_data.dart';
 import '../js_backend/js_interop_analysis.dart';
 import '../js_backend/interceptor_data.dart';
 import '../js_backend/mirrors_data.dart';
 import '../js_backend/runtime_types.dart';
@@ skipping 272 matching lines @@
         return mirrorsData.mustRetainMetadata;
       case 'USE_CONTENT_SECURITY_POLICY':
         return options.useContentSecurityPolicy;
       case 'IS_FULL_EMITTER':
         return !USE_LAZY_EMITTER && !options.useStartupEmitter;
       default:
         return null;
     }
   }
 }