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

tests/compiler/dart2js/compiler_helper.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 compiler_helper;
 
 import 'dart:async';
 import "package:expect/expect.dart";
 
 import 'package:compiler/src/elements/elements.dart'
@@ skipping 94 matching lines @@
     if (minify) {
       options.add(Flags.minify);
     }
     if (analyzeAll) {
       options.add(Flags.analyzeAll);
     }
     if (trustJSInteropTypeAnnotations) {
       options.add(Flags.trustJSInteropTypeAnnotations);
     }
 
+    if (disableInlining) {
+      options.add(Flags.disableInlining);
+    }
+
     Map<String, String> source;
     if (entry != 'main') {
       source = {'main.dart': "$code\n\nmain() => $entry;" };
     } else {
       source = {'main.dart': code};
     }
 
     CompilationResult result = await runCompiler(
         memorySourceFiles: source,
         options: options,
-        outputProvider: outputCollector,
-        beforeRun: (compiler) {
-          if (disableInlining) {
-            compiler.disableInlining = true;
-          }
-        });
+        outputProvider: outputCollector);
     Expect.isTrue(result.isSuccess);
     Compiler compiler =  result.compiler;
     lego.Element element = compiler.mainApp.find(entry);
     js.JavaScriptBackend backend = compiler.backend;
     String generated = backend.getGeneratedCode(element);
     if (check != null) {
       check(generated);
     }
     return returnAll ? outputCollector.getOutput('', 'js') : generated;
   }
@@ skipping 150 matching lines @@
     regexp = regexp.replaceAll(xRe, '(?:$anyIdentifier)');
     final spaceRe = new RegExp('\\s+');
     regexp = regexp.replaceAll(spaceRe, '(?:\\s*)');
     if (shouldMatch) {
       Expect.isTrue(new RegExp(regexp).hasMatch(generated));
     } else {
       Expect.isFalse(new RegExp(regexp).hasMatch(generated));
     }
   });
 }