Remove ConstantExpression.value

pkg/compiler/lib/src/compiler.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.
 
 part of dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 1362 matching lines @@
              MessageKind.IMPORT_EXPERIMENTAL_MIRRORS,
               {'importChain': importChains.join(
                    MessageKind.IMPORT_EXPERIMENTAL_MIRRORS_PADDING)});
         }
       }
 
       functionClass.ensureResolved(this);
       functionApplyMethod = functionClass.lookupLocalMember('apply');
 
       proxyConstant =
-          resolver.constantCompiler.compileConstant(
-              coreLibrary.find('proxy')).value;
+          constants.getConstantValue(
+              resolver.constantCompiler.compileConstant(
+                  coreLibrary.find('proxy')));
 
       if (preserveComments) {
         return libraryLoader.loadLibrary(DART_MIRRORS)
             .then((LibraryElement libraryElement) {
           documentClass = libraryElement.find('Comment');
         });
       }
     }).then((_) => backend.onLibrariesLoaded(loadedLibraries));
   }
 
@@ skipping 1077 matching lines @@
     return futureClass.computeType(compiler).createInstantiation([elementType]);
   }
 
   @override
   InterfaceType streamType([DartType elementType = const DynamicType()]) {
     return streamClass.computeType(compiler).createInstantiation([elementType]);
   }
 }
 
 typedef void InternalErrorFunction(Spannable location, String message);