Merge CoreTypes and CoreClasses into CommonElements.

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

 // Copyright (c) 2012, 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.
 
 library dart2js.common.resolution;
 
 import '../common.dart';
 import '../compile_time_constants.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/expressions.dart' show ConstantExpression;
 import '../constants/values.dart' show ConstantValue;
-import '../core_types.dart' show CoreClasses, CoreTypes, CommonElements;
+import '../core_types.dart' show CommonElements;
 import '../dart_types.dart' show DartType, Types;
 import '../elements/elements.dart'
     show
         AstElement,
         ClassElement,
-        ConstructorElement,
         Element,
         ExecutableElement,
         FunctionElement,
         FunctionSignature,
         LibraryElement,
         MetadataAnnotation,
         MethodElement,
         ResolvedAst,
         TypedefElement;
 import '../enqueue.dart' show ResolutionEnqueuer;
@@ skipping 91 matching lines @@
   bool isForeign(Element element) => false;
 
   /// Returns `true` if this target supports async/await.
   bool get supportsAsyncAwait => true;
 }
 
 // TODO(johnniwinther): Rename to `Resolver` or `ResolverContext`.
 abstract class Resolution implements Frontend {
   ParsingContext get parsingContext;
   DiagnosticReporter get reporter;
-  CoreClasses get coreClasses;
-  CoreTypes get coreTypes;
   CommonElements get commonElements;
   Types get types;
   Target get target;
   ResolverTask get resolver;
   ResolutionEnqueuer get enqueuer;
   CompilerOptions get options;
   IdGenerator get idGenerator;
   ConstantEnvironment get constants;
   MirrorUsageAnalyzerTask get mirrorUsageAnalyzerTask;
 
@@ skipping 110 matching lines @@
       if (cls.isPatch) {
         patchParser.parsePatchClassNode(cls);
       }
     });
   }
 
   @override
   ScannerOptions getScannerOptionsFor(Element element) => new ScannerOptions(
       canUseNative: backend.canLibraryUseNative(element.library));
 }