Support for accessing arrays in the debugger

pkg/dartino_compiler/lib/src/dartino_compiler_implementation.dart

 // Copyright (c) 2015, the Dartino 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.md file.
 
 library dartino_compiler.dartino_compiler_implementation;
 
 import 'dart:async' show
     EventSink,
     Future;
 
@@ skipping 79 matching lines @@
 class DartinoCompilerImplementation extends CompilerImpl {
   final Uri dartinoVm;
 
   final Uri nativesJson;
 
   final IncrementalCompiler incrementalCompiler;
 
   Map<Uri, CompilationUnitElementX> compilationUnits;
   DartinoContext internalContext;
 
+  DartinoBackend get backend => super.backend;
+
   /// A reference to [../compiler.dart:DartinoCompiler] used for testing.
   // TODO(ahe): Clean this up and remove this.
   var helper;
 
   DartinoEnqueueTask get enqueuer => super.enqueuer;
 
   DartinoCompilerImplementation(
       api.CompilerInput provider,
       api.CompilerOutput outputProvider,
       api.CompilerDiagnostics handler,
@@ skipping 167 matching lines @@
   }
 }
 
 SourceFile getSourceFile(api.CompilerInput provider, Uri uri) {
   if (provider is SourceFileProvider) {
     return provider.getSourceFile(uri);
   } else {
     return null;
   }
 }