Make CompilerTask independent of compiler.

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart

 // Copyright (c) 2013, 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.ir_builder_task;
 
 import 'package:js_runtime/shared/embedded_names.dart'
     show JsBuiltin, JsGetName;
 
 import '../closure.dart' as closure;
@@ skipping 38 matching lines @@
   String toString() => 'ExplicitReceiverParameter($executableContext)';
 }
 
 /// This task provides the interface to build IR nodes from [ast.Node]s, which
 /// is used from the [CpsFunctionCompiler] to generate code.
 ///
 /// This class is mainly there to correctly measure how long building the IR
 /// takes.
 class IrBuilderTask extends CompilerTask {
   final SourceInformationStrategy sourceInformationStrategy;
+  final Compiler compiler;
 
   String bailoutMessage = null;
 
   /// If not null, this function will be called with for each
   /// [ir.FunctionDefinition] node that has been built.
   IrBuilderCallback builderCallback;
 
   IrBuilderTask(Compiler compiler, this.sourceInformationStrategy,
       [this.builderCallback])
-      : super(compiler);
+      : compiler = compiler,
+        super(compiler.measurer);
 
   String get name => 'CPS builder';
 
   ir.FunctionDefinition buildNode(
       AstElement element, TypeMaskSystem typeMaskSystem) {
     return measure(() {
       bailoutMessage = null;
 
       ResolvedAst resolvedAst = element.resolvedAst;
       element = element.implementation;
-      return reporter.withCurrentElement(element, () {
+      return compiler.reporter.withCurrentElement(element, () {
         SourceInformationBuilder sourceInformationBuilder =
             sourceInformationStrategy.createBuilderForContext(resolvedAst);
 
         IrBuilderVisitor builder = new IrBuilderVisitor(
             resolvedAst, compiler, sourceInformationBuilder, typeMaskSystem);
         ir.FunctionDefinition irNode = builder.buildExecutable(element);
         if (irNode == null) {
           bailoutMessage = builder.bailoutMessage;
         } else if (builderCallback != null) {
           builderCallback(element, irNode);
@@ skipping 3930 matching lines @@
       _backend.jsInteropAnalysis.hasAnonymousAnnotation(element.contextClass);
 
   String getJsInteropTargetPath(FunctionElement element) {
     return '${_backend.namer.fixedBackendPath(element)}.'
         '${_backend.nativeData.getFixedBackendName(element)}';
   }
 
   DartType get jsJavascriptObjectType =>
       _backend.helpers.jsJavaScriptObjectClass.thisType;
 }