Move all flags to CompilerOptions (first step to stop passing the compiler to

pkg/compiler/lib/src/world.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.world;
 
 import 'closure.dart' show
     SynthesizedCallMethodElementX;
 import 'common.dart';
 import 'common/backend_api.dart' show
@@ skipping 635 matching lines @@
     if (directlyInstantiated) {
       node.isDirectlyInstantiated = true;
     }
   }
 
   void populate() {
     /// Updates the `isDirectlyInstantiated` and `isIndirectlyInstantiated`
     /// properties of the [ClassHierarchyNode] for [cls].
 
     void addSubtypes(ClassElement cls) {
-      if (compiler.hasIncrementalSupport && !alreadyPopulated.add(cls)) {
+      if (compiler.options.hasIncrementalSupport &&
+          !alreadyPopulated.add(cls)) {
         return;
       }
       assert(cls.isDeclaration);
       if (!cls.isResolved) {
         reporter.internalError(cls, 'Class "${cls.name}" is not resolved.');
       }
 
       _updateClassHierarchyNodeForClass(cls, directlyInstantiated: true);
 
       // Walk through the superclasses, and record the types
@@ skipping 167 matching lines @@
     // method of function classes that were generated for function
     // expressions. In such a case, we have to look at the original
     // function expressions's element.
     // TODO(herhut): Generate classes for function expressions earlier.
     if (element is SynthesizedCallMethodElementX) {
       return getMightBePassedToApply(element.expression);
     }
     return functionsThatMightBePassedToApply.contains(element);
   }
 
-  bool get hasClosedWorldAssumption => !compiler.hasIncrementalSupport;
+  bool get hasClosedWorldAssumption => !compiler.options.hasIncrementalSupport;
 }