No longer store the compilation-context in WorkItem.

pkg/compiler/lib/src/common/codegen.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.codegen;
 
 import '../common.dart';
 import '../compiler.dart' show Compiler;
 import '../constants/values.dart' show ConstantValue;
 import '../dart_types.dart' show DartType, InterfaceType;
 import '../elements/elements.dart'
     show
         AstElement,
         ClassElement,
         Element,
         FunctionElement,
         LocalFunctionElement,
         ResolvedAst;
 import '../enqueue.dart' show Enqueuer;
 import '../universe/use.dart' show DynamicUse, StaticUse, TypeUse;
 import '../universe/world_impact.dart'
     show WorldImpact, WorldImpactBuilder, WorldImpactVisitor;
 import '../util/util.dart' show Pair, Setlet;
 import 'registry.dart' show Registry, EagerRegistry;
-import 'work.dart' show ItemCompilationContext, WorkItem;
+import 'work.dart' show WorkItem;
 
 class CodegenImpact extends WorldImpact {
   const CodegenImpact();
 
   // TODO(johnniwinther): Remove this.
   Registry get registry => null;
 
   Iterable<ConstantValue> get compileTimeConstants => const <ConstantValue>[];
 
   Iterable<Pair<DartType, DartType>> get typeVariableBoundsSubtypeChecks {
@@ skipping 184 matching lines @@
   void registerAsyncMarker(FunctionElement element) {
     worldImpact.registerAsyncMarker(element);
   }
 }
 
 /// [WorkItem] used exclusively by the [CodegenEnqueuer].
 class CodegenWorkItem extends WorkItem {
   CodegenRegistry registry;
   final ResolvedAst resolvedAst;
 
-  factory CodegenWorkItem(Compiler compiler, AstElement element,
-      ItemCompilationContext compilationContext) {
+  factory CodegenWorkItem(Compiler compiler, AstElement element) {
     // If this assertion fails, the resolution callbacks of the backend may be
     // missing call of form registry.registerXXX. Alternatively, the code
     // generation could spuriously be adding dependencies on things we know we
     // don't need.
     assert(invariant(element, element.hasResolvedAst,
         message: "$element has no resolved ast."));
     ResolvedAst resolvedAst = element.resolvedAst;
-    return new CodegenWorkItem.internal(resolvedAst, compilationContext);
+    return new CodegenWorkItem.internal(resolvedAst);
   }
 
-  CodegenWorkItem.internal(
-      ResolvedAst resolvedAst, ItemCompilationContext compilationContext)
+  CodegenWorkItem.internal(ResolvedAst resolvedAst)
       : this.resolvedAst = resolvedAst,
-        super(resolvedAst.element, compilationContext);
+        super(resolvedAst.element);
 
   WorldImpact run(Compiler compiler, Enqueuer world) {
     if (world.isProcessed(element)) return const WorldImpact();
 
     registry = new CodegenRegistry(compiler, element);
     return compiler.codegen(this, world);
   }
 
   String toString() => 'CodegenWorkItem(${resolvedAst.element})';
 }