Rename UniverseSelector to DynamicUse and move it to use.dart

pkg/compiler/lib/src/resolution/registry.dart

Index: pkg/compiler/lib/src/resolution/registry.dart
diff --git a/pkg/compiler/lib/src/resolution/registry.dart b/pkg/compiler/lib/src/resolution/registry.dart
index 840449451e422666c8ad2d7f6f2292363870f5bf..d41c58fc5be2ee91c6cc6c418b0ea17ff8e0ea10 100644
--- a/pkg/compiler/lib/src/resolution/registry.dart
+++ b/pkg/compiler/lib/src/resolution/registry.dart
@@ -29,9 +29,8 @@ import '../universe/call_structure.dart' show
     CallStructure;
 import '../universe/selector.dart' show
     Selector;
-import '../universe/universe.dart' show
-    UniverseSelector;
 import '../universe/use.dart' show
+    DynamicUse,
     StaticUse;
 import '../universe/world_impact.dart' show
     WorldImpactBuilder;
@@ -394,8 +393,8 @@ class ResolutionRegistry extends Registry {
         new ForeignResolutionResolver(visitor, this));
   }
 
-  void registerDynamicUse(UniverseSelector selector) {
-    worldImpact.registerDynamicUse(selector);
+  void registerDynamicUse(DynamicUse dynamicUse) {
+    worldImpact.registerDynamicUse(dynamicUse);
   }
 
   void registerConstSymbol(String name) {