Remove Compiler.commonElements

pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart

Index: pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart b/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
index 871a2d6207649d06408ebd9465c9a33bf7108526..c69eee5b26fa35bd675b8122a49ab61f9ff33082 100644
--- a/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/full_emitter/emitter.dart
@@ -123,7 +123,7 @@ class Emitter extends js_emitter.EmitterBase {
   ConstantEmitter constantEmitter;
   NativeEmitter get nativeEmitter => task.nativeEmitter;
   TypeTestRegistry get typeTestRegistry => task.typeTestRegistry;
-  CommonElements get commonElements => compiler.commonElements;
+  CommonElements get commonElements => _closedWorld.commonElements;
   ElementEnvironment get _elementEnvironment => compiler.elementEnvironment;
 
   // The full code that is written to each hunk part-file.
@@ -809,7 +809,7 @@ class Emitter extends js_emitter.EmitterBase {
     jsAst.Expression finishedClassesAccess =
         generateEmbeddedGlobalAccess(embeddedNames.FINISHED_CLASSES);
     jsAst.Expression cyclicThrow =
-        staticFunctionAccess(compiler.commonElements.cyclicThrowHelper);
+        staticFunctionAccess(commonElements.cyclicThrowHelper);
     jsAst.Expression laziesAccess =
         generateEmbeddedGlobalAccess(embeddedNames.LAZIES);
 
@@ -1905,7 +1905,7 @@ class Emitter extends js_emitter.EmitterBase {
 
   jsAst.Comment buildGeneratedBy() {
     List<String> options = [];
-    if (compiler.commonElements.mirrorsLibrary != null &&
+    if (commonElements.mirrorsLibrary != null &&
         !compiler.options.loadFromDill) {
       // TODO(johnniwinther): Add `isMirrorsUsed` to [BackendData] instead
       // of checking `mirrorsLibrary`.