Remove ConstantExpression.value

tests/compiler/dart2js/memory_compiler.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.
 
 library dart2js.test.memory_compiler;
 
 import 'memory_source_file_helper.dart';
 
+import 'package:compiler/src/compile_time_constants.dart';
+
 import 'package:compiler/src/dart2jslib.dart'
        show NullSink;
 
 import 'package:compiler/compiler.dart'
     show Diagnostic, DiagnosticHandler, CompilerOutputProvider;
 
 import 'dart:async';
 
 import 'package:compiler/src/mirrors/source_mirrors.dart';
 import 'package:compiler/src/mirrors/analyze.dart';
@@ skipping 129 matching lines @@
           compiler.onLibraryCreated(patchLibrary);
           compiler.onLibraryScanned(patchLibrary, null);
         }
         copiedLibraries[library.canonicalUri] = library;
       }
     });
     // TODO(johnniwinther): Assert that no libraries are loaded lazily from
     // this call.
     compiler.onLibrariesLoaded(new MemoryLoadedLibraries(copiedLibraries));
 
+    compiler.backend.constantCompilerTask.copyConstantValues(
+        cachedCompiler.backend.constantCompilerTask);
     compiler.symbolConstructor = cachedCompiler.symbolConstructor;
     compiler.mirrorSystemClass = cachedCompiler.mirrorSystemClass;
     compiler.mirrorsUsedClass = cachedCompiler.mirrorsUsedClass;
     compiler.mirrorSystemGetNameFunction =
         cachedCompiler.mirrorSystemGetNameFunction;
     compiler.symbolImplementationClass =
         cachedCompiler.symbolImplementationClass;
     compiler.symbolValidatedConstructor =
         cachedCompiler.symbolValidatedConstructor;
     compiler.mirrorsUsedConstructor = cachedCompiler.mirrorsUsedConstructor;
@@ skipping 65 matching lines @@
       createDiagnosticHandler(diagnosticHandler, provider, showDiagnostics);
 
   List<Uri> libraries = <Uri>[];
   memorySourceFiles.forEach((String path, _) {
     libraries.add(new Uri(scheme: 'memory', path: path));
   });
 
   return analyze(libraries, libraryRoot, packageRoot,
                  provider, handler, options);
 }