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

pkg/compiler/lib/src/js_emitter/lazy_emitter/model_emitter.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.
 
 library dart2js.js_emitter.lazy_emitter.model_emitter;
 
 import '../../compiler.dart' show
     Compiler;
 import '../../constants/values.dart' show
     ConstantValue,
@@ skipping 175 matching lines @@
   /// string in parenthesis. The result is also escaped.
   ///
   /// See [_UnparsedNode] for details.
   js.Literal unparse(Compiler compiler, js.Node value,
                      {bool protectForEval: true}) {
     return new js.UnparsedNode(value, compiler, protectForEval);
   }
 
   String buildGeneratedBy(compiler) {
     var suffix = '';
-    if (compiler.hasBuildId) suffix = ' version: ${compiler.buildId}';
+    if (compiler.options.hasBuildId) {
+      suffix = ' version: ${compiler.options.buildId}';
+    }
     return '// Generated by dart2js, the Dart to JavaScript compiler$suffix.\n';
   }
 
   js.Statement emitMainFragment(Program program) {
     MainFragment fragment = program.fragments.first;
     List<js.Expression> elements = fragment.libraries.map(emitLibrary).toList();
     elements.add(
         emitLazilyInitializedStatics(fragment.staticLazilyInitializedFields));
     elements.add(emitConstants(fragment.constants));
 
@@ skipping 1043 matching lines @@
 
   var end = Date.now();
   // print('Setup: ' + (end - start) + ' ms.');
 
   #invokeMain;  // Start main.
 
 })(Date.now(), #code)
 }""";
 
 }