Remove static state.

pkg/compiler/lib/src/universe/universe.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 universe;
 
 import '../elements/elements.dart';
 import '../dart2jslib.dart';
 import '../dart_types.dart';
 import '../types/types.dart';
@@ skipping 763 matching lines @@
                        selector.name,
                        selector.library,
                        selector.argumentCount,
                        selector.namedArguments,
                        selector._orderedNamedArguments,
                        hashCode) {
     assert(mask != null);
     assert(asUntyped.mask == null);
   }
 
-  static Map<Selector, Map<TypeMask, TypedSelector>> canonicalizedValues =
-      new Map<Selector, Map<TypeMask, TypedSelector>>();
 
   factory TypedSelector(TypeMask mask, Selector selector, World world) {
     if (!world.hasClosedWorldAssumption) {
       // TODO(johnniwinther): Improve use of TypedSelector in an open world.
       bool isNullable = mask.isNullable;
       mask = world.compiler.typesTask.dynamicType;
       if (isNullable) {
         mask = mask.nullable();
       }
     }
     // TODO(johnniwinther): Allow more TypeSelector kinds during resoluton.
     assert(world.isClosed || mask.isExact);
     if (selector.mask == mask) return selector;
     Selector untyped = selector.asUntyped;
-    Map<TypeMask, TypedSelector> map = canonicalizedValues.putIfAbsent(untyped,
-        () => new Map<TypeMask, TypedSelector>());
+    Map<TypeMask, TypedSelector> map = world.canonicalizedValues
+        .putIfAbsent(untyped, () => new Map<TypeMask, TypedSelector>());
     TypedSelector result = map[mask];
     if (result == null) {
       int hashCode = Selector.mixHashCodeBits(untyped.hashCode, mask.hashCode);
       result = map[mask] = new TypedSelector.internal(mask, untyped, hashCode);
     }
     return result;
   }
 
   factory TypedSelector.exact(
       ClassElement base, Selector selector, World world)
@@ skipping 30 matching lines @@
 
   Selector extendIfReachesAll(Compiler compiler) {
     bool canReachAll = compiler.enabledInvokeOn
         && mask.needsNoSuchMethodHandling(this, compiler.world);
     return canReachAll
         ? new TypedSelector(
             compiler.typesTask.dynamicType, this, compiler.world)
         : this;
   }
 }