Convert property methods into getters.

sdk/lib/_internal/compiler/implementation/inferrer/map_tracer.dart

 // Copyright (c) 2014, 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.
 
 part of type_graph_inferrer;
 
 Set<String> okMapSelectorsSet = new Set.from(
     const <String>[
       // From Object.
       "==",
@@ skipping 54 matching lines @@
       bailout('Used in JS ${info.call}');
     }
   }
 
   visitDynamicCallSiteTypeInformation(DynamicCallSiteTypeInformation info) {
     super.visitDynamicCallSiteTypeInformation(info);
     Selector selector = info.selector;
     String selectorName = selector.name;
     if (currentUser == info.receiver) {
       if (!okMapSelectorsSet.contains(selectorName)) {
-        if (selector.isCall()) {
+        if (selector.isCall) {
           int positionalLength = info.arguments.positional.length;
           if (selectorName == 'addAll') {
             // All keys and values from the argument flow into
             // the map.
             TypeInformation map = info.arguments.positional[0];
             if (map is MapTypeInformation) {
               mapAssignments.add(map);
             } else {
               // If we could select a component from a [TypeInformation],
               // like the keytype or valuetype in this case, we could
@@ skipping 13 matching lines @@
             valueAssignments.add(inferrer.types.dynamicType);
           } else {
             // It would be nice to handle [Map.keys] and [Map.values], too.
             // However, currently those calls do not trigger the creation
             // of a [ListTypeInformation], so I have nowhere to propagate
             // that information.
             // TODO(herhut): add support for Map.keys and Map.values.
             bailout('Map used in a not-ok selector [$selectorName]');
             return;
           }
-        } else if (selector.isIndexSet()) {
+        } else if (selector.isIndexSet) {
           keyAssignments.add(info.arguments.positional[0]);
           valueAssignments.add(info.arguments.positional[1]);
-        } else if (!selector.isIndex()) {
+        } else if (!selector.isIndex) {
           bailout('Map used in a not-ok selector [$selectorName]');
           return;
         }
       }
-    } else if (selector.isCall() &&
-               !info.targets.every((element) => element.isFunction())) {
+    } else if (selector.isCall &&
+               !info.targets.every((element) => element.isFunction)) {
       bailout('Passed to a closure');
       return;
     }
   }
 }