Remove Compiler.commonElements

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

Index: pkg/compiler/lib/src/js_backend/mirrors_analysis.dart
diff --git a/pkg/compiler/lib/src/js_backend/mirrors_analysis.dart b/pkg/compiler/lib/src/js_backend/mirrors_analysis.dart
index 7fa3ecfe521b92c20c76ffe8d60776937002629f..511820d61bbc9603549e6a90b8805535362a82c2 100644
--- a/pkg/compiler/lib/src/js_backend/mirrors_analysis.dart
+++ b/pkg/compiler/lib/src/js_backend/mirrors_analysis.dart
@@ -389,8 +389,8 @@ class MirrorsHandler {
   Iterable<ClassEntity> get _classesRequiredForReflection {
     // TODO(herhut): Clean this up when classes needed for rti are tracked.
     return [
-      _backend.compiler.commonElements.closureClass,
-      _backend.compiler.commonElements.jsIndexableClass
+      _resolution.commonElements.closureClass,
+      _resolution.commonElements.jsIndexableClass
     ];
   }