remove old way of collecting dependencies for dump-info

pkg/compiler/lib/src/js_backend/backend.dart

 // Copyright (c) 2012, 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.
 
 library js_backend.backend;
 
 import 'dart:async' show Future;
 
 import 'package:js_runtime/shared/embedded_names.dart' as embeddedNames;
 
@@ skipping 1638 matching lines @@
         // Enable runtime type support if we discover a getter called
         // runtimeType. We have to enable runtime type before hitting the
         // codegen, so that constructors know whether they need to generate code
         // for runtime type.
         hasRuntimeTypeSupport = true;
         // TODO(ahe): Record precise dependency here.
         worldImpact.addImpact(registerRuntimeType());
       } else if (compiler.commonElements.isFunctionApplyMethod(element)) {
         hasFunctionApplySupport = true;
       }
-    } else {
-      // TODO(sigmund): add other missing dependencies (internals, selectors
-      // enqueued after allocations).
-      compiler.dumpInfoTask.registerDependency(element);
     }
     return worldImpact;
   }
 
   /// Called when [:const Symbol(name):] is seen.
   void registerConstSymbol(String name) {
     symbolsUsed.add(name);
     if (name.endsWith('=')) {
       symbolsUsed.add(name.substring(0, name.length - 1));
     }
@@ skipping 1518 matching lines @@
   }
 
   @override
   FieldEntity get symbolField => helpers.symbolImplementationField;
 
   @override
   InterfaceType get symbolType {
     return _env.getRawType(helpers.symbolImplementationClass);
   }
 }