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

pkg/compiler/lib/src/js_emitter/main_call_stub_generator.dart

 // Copyright (c) 2014, 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.
 
 part of dart2js.js_emitter;
 
 class MainCallStubGenerator {
   final Compiler compiler;
   final JavaScriptBackend backend;
   final CodeEmitterTask emitterTask;
@@ skipping 14 matching lines @@
         [emitterTask.staticFunctionAccess(isolateMain), mainAccess]);
   }
 
   jsAst.Statement generateInvokeMain() {
     Element main = compiler.mainFunction;
     jsAst.Expression mainCallClosure = null;
     if (compiler.hasIsolateSupport) {
       Element isolateMain =
         helpers.isolateHelperLibrary.find(BackendHelpers.START_ROOT_ISOLATE);
       mainCallClosure = _buildIsolateSetupClosure(main, isolateMain);
-    } else if (compiler.hasIncrementalSupport) {
+    } else if (compiler.options.hasIncrementalSupport) {
       mainCallClosure = js(
           'function() { return #(); }',
           emitterTask.staticFunctionAccess(main));
     } else {
       mainCallClosure = emitterTask.staticFunctionAccess(main);
     }
 
     jsAst.Expression currentScriptAccess =
         emitterTask.generateEmbeddedGlobalAccess(embeddedNames.CURRENT_SCRIPT);
 
@@ skipping 30 matching lines @@
         if (typeof dartMainRunner === "function") {
           dartMainRunner(#mainCallClosure, []);
         } else {
           #mainCallClosure([]);
         }
       })''',
       {'currentScript': currentScriptAccess,
        'mainCallClosure': mainCallClosure});
   }
 }