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

pkg/compiler/lib/src/js_emitter/full_emitter/nsm_emitter.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.
 
 part of dart2js.js_emitter.full_emitter;
 
 class NsmEmitter extends CodeEmitterHelper {
   final List<Selector> trivialNsmHandlers = <Selector>[];
 
   /// If this is true then we can generate the noSuchMethod handlers at startup
@@ skipping 104 matching lines @@
    * decoding the base 88 numbers would overflow JavaScript's puny integers.
    *
    * There are some selectors that have a special calling convention (because
    * they are called with the receiver as the first argument).  They need a
    * slightly different noSuchMethod handler, so we handle these first.
    */
   List<jsAst.Statement> buildTrivialNsmHandlers() {
     List<jsAst.Statement> statements = <jsAst.Statement>[];
     if (trivialNsmHandlers.length == 0) return statements;
 
-    bool minify = compiler.enableMinification;
+    bool minify = compiler.options.enableMinification;
     bool useDiffEncoding = minify && trivialNsmHandlers.length > 30;
 
     // Find out how many selectors there are with the special calling
     // convention.
     Iterable<Selector> interceptedSelectors = trivialNsmHandlers.where(
             (Selector s) => backend.isInterceptedName(s.name));
     Iterable<Selector> ordinarySelectors = trivialNsmHandlers.where(
             (Selector s) => !backend.isInterceptedName(s.name));
 
     // Get the short names (JS names, perhaps minified).
@@ skipping 246 matching lines @@
   }
 
   String get value {
     if (_cachedValue == null) {
       _cachedValue = _computeDiffEncoding();
     }
 
     return _cachedValue;
   }
 }