Rename KernelWorldBuilder to KernelElementBuilder

tests/compiler/dart2js/kernel/closed_world2_test.dart

 // Copyright (c) 2017, 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.
 
 // Partial test that the closed world computed from [WorldImpact]s derived from
 // kernel is equivalent to the original computed from resolution.
 library dart2js.kernel.closed_world2_test;
 
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/closure.dart';
@@ skipping 17 matching lines @@
 import 'package:compiler/src/js_backend/native_data.dart';
 import 'package:compiler/src/js_backend/impact_transformer.dart';
 import 'package:compiler/src/js_backend/interceptor_data.dart';
 import 'package:compiler/src/js_backend/lookup_map_analysis.dart';
 import 'package:compiler/src/js_backend/mirrors_analysis.dart';
 import 'package:compiler/src/js_backend/mirrors_data.dart';
 import 'package:compiler/src/js_backend/no_such_method_registry.dart';
 import 'package:compiler/src/js_backend/resolution_listener.dart';
 import 'package:compiler/src/js_backend/type_variable_handler.dart';
 import 'package:compiler/src/native/enqueue.dart';
-import 'package:compiler/src/kernel/world_builder.dart';
+import 'package:compiler/src/kernel/element_builder.dart';
 import 'package:compiler/src/options.dart';
 import 'package:compiler/src/universe/world_builder.dart';
 import 'package:compiler/src/universe/world_impact.dart';
 import 'package:compiler/src/world.dart';
 import '../memory_compiler.dart';
 import '../serialization/helper.dart';
 
 import 'closed_world_test.dart';
 
 main(List<String> args) {
@@ skipping 16 matching lines @@
         options: [
           Flags.analyzeAll,
           Flags.useKernel,
           Flags.enableAssertMessage
         ]);
     ElementResolutionWorldBuilder.useInstantiationMap = true;
     compiler.resolution.retainCachesForTesting = true;
     await compiler.run(entryPoint);
     compiler.resolutionWorldBuilder.closeWorld(compiler.reporter);
 
-    KernelWorldBuilder worldBuilder = new KernelWorldBuilder(
+    KernelElementBuilder elementBuilder = new KernelElementBuilder(
         compiler.reporter, compiler.backend.kernelTask.program);
     List list = createKernelResolutionEnqueuerListener(compiler.options,
-        compiler.reporter, compiler.deferredLoadTask, worldBuilder);
+        compiler.reporter, compiler.deferredLoadTask, elementBuilder);
     ResolutionEnqueuerListener resolutionEnqueuerListener = list[0];
     ImpactTransformer impactTransformer = list[1];
     ResolutionEnqueuer enqueuer = new ResolutionEnqueuer(
         compiler.enqueuer,
         compiler.options,
         compiler.reporter,
         const TreeShakingEnqueuerStrategy(),
         resolutionEnqueuerListener,
         new KernelResolutionWorldBuilder(
-            worldBuilder.elementEnvironment,
-            worldBuilder.commonElements,
+            elementBuilder.elementEnvironment,
+            elementBuilder.commonElements,
             new NativeBasicDataImpl(),
             const OpenWorldStrategy()),
-        new KernelWorkItemBuilder(worldBuilder, impactTransformer),
+        new KernelWorkItemBuilder(elementBuilder, impactTransformer),
         'enqueuer from kelements');
 
     computeClosedWorld(
-        compiler.reporter, enqueuer, worldBuilder.elementEnvironment);
+        compiler.reporter, enqueuer, elementBuilder.elementEnvironment);
   });
 }
 
 List createKernelResolutionEnqueuerListener(
     CompilerOptions options,
     DiagnosticReporter reporter,
     DeferredLoadTask deferredLoadTask,
-    KernelWorldBuilder worldBuilder) {
-  ElementEnvironment elementEnvironment = worldBuilder.elementEnvironment;
-  CommonElements commonElements = worldBuilder.commonElements;
+    KernelElementBuilder elementBuilder) {
+  ElementEnvironment elementEnvironment = elementBuilder.elementEnvironment;
+  CommonElements commonElements = elementBuilder.commonElements;
   BackendImpacts impacts = new BackendImpacts(options, commonElements);
 
   // TODO(johnniwinther): Create Kernel based implementations for these:
   NativeBasicData nativeBasicData = new NativeBasicDataImpl();
   RuntimeTypesNeedBuilder rtiNeedBuilder = new RuntimeTypesNeedBuilderImpl();
   MirrorsDataBuilder mirrorsDataBuilder = new MirrorsDataBuilderImpl();
   CustomElementsResolutionAnalysis customElementsResolutionAnalysis =
       new CustomElementsResolutionAnalysisImpl();
   MirrorsResolutionAnalysis mirrorsResolutionAnalysis =
       new MirrorsResolutionAnalysisImpl();
   LookupMapResolutionAnalysis lookupMapResolutionAnalysis =
       new LookupMapResolutionAnalysis(reporter, elementEnvironment);
   InterceptorDataBuilder interceptorDataBuilder =
       new InterceptorDataBuilderImpl(
           nativeBasicData, elementEnvironment, commonElements);
   BackendUsageBuilder backendUsageBuilder =
       new BackendUsageBuilderImpl(commonElements);
   NoSuchMethodRegistry noSuchMethodRegistry = new NoSuchMethodRegistry(
-      commonElements, new KernelNoSuchMethodResolver(worldBuilder));
+      commonElements, new KernelNoSuchMethodResolver(elementBuilder));
   NativeResolutionEnqueuer nativeResolutionEnqueuer =
       new NativeResolutionEnqueuer(options, elementEnvironment, commonElements,
-          backendUsageBuilder, new KernelNativeClassResolver(worldBuilder));
+          backendUsageBuilder, new KernelNativeClassResolver(elementBuilder));
 
   ResolutionEnqueuerListener listener = new ResolutionEnqueuerListener(
       options,
       elementEnvironment,
       commonElements,
       impacts,
       nativeBasicData,
       interceptorDataBuilder,
       backendUsageBuilder,
       rtiNeedBuilder,
@@ skipping 128 matching lines @@
   @override
   MirrorsCodegenAnalysis close() {
     throw new UnimplementedError('MirrorsResolutionAnalysisImpl.close');
   }
 
   @override
   void onResolutionComplete() {}
 }
 
 class KernelWorkItemBuilder implements WorkItemBuilder {
-  final KernelWorldBuilder _worldBuilder;
+  final KernelElementBuilder _worldBuilder;
   final ImpactTransformer _impactTransformer;
 
   KernelWorkItemBuilder(this._worldBuilder, this._impactTransformer);
 
   @override
   WorkItem createWorkItem(MemberEntity entity) {
     return new KernelWorkItem(_worldBuilder, _impactTransformer, entity);
   }
 }
 
 class KernelWorkItem implements ResolutionWorkItem {
-  final KernelWorldBuilder _worldBuilder;
+  final KernelElementBuilder _worldBuilder;
   final ImpactTransformer _impactTransformer;
   final MemberEntity element;
 
   KernelWorkItem(this._worldBuilder, this._impactTransformer, this.element);
 
   @override
   WorldImpact run() {
     ResolutionImpact impact = _worldBuilder.computeWorldImpact(element);
     return _impactTransformer.transformResolutionImpact(impact);
   }
 }