Big merge from experimental to bleeding edge.

sdk/lib/_internal/compiler/implementation/dart2js.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.
 
 library dart2js;
 
+import 'dart:async';
 import 'dart:io';
 import 'dart:uri';
 import 'dart:utf';
 
 import '../compiler.dart' as api;
 import 'colors.dart' as colors;
 import 'source_file.dart';
 import 'filenames.dart';
 import 'util/uri_extras.dart';
 
@@ skipping 263 matching lines @@
 
   Uri uri = cwd.resolve(arguments[0]);
   if (packageRoot == null) {
     packageRoot = uri.resolve('./packages/');
   }
 
   info('package root is $packageRoot');
 
   // TODO(ahe): We expect the future to be complete and call value
   // directly. In effect, we don't support truly asynchronous API.
-  String code = api.compile(uri, libraryRoot, packageRoot, provider, handler,
-                            options).value;
+  String code = deprecatedFutureValue(
+      api.compile(uri, libraryRoot, packageRoot, provider, handler, options));
   if (code == null) {
     fail('Error: Compilation failed.');
   }
   String sourceMapFileName =
       sourceMapOut.path.substring(sourceMapOut.path.lastIndexOf('/') + 1);
   code = '$code\n//@ sourceMappingURL=${sourceMapFileName}';
   writeString(out, code);
   writeString(new Uri.fromString('$out.deps'), getDepsOutput(sourceFiles));
   int bytesWritten = code.length;
   info('compiled $dartBytesRead bytes Dart -> $bytesWritten bytes '
@@ skipping 16 matching lines @@
     fail('Error: Unhandled scheme ${uri.scheme}.');
   }
   var file = new File(uriPathToNative(uri.path)).openSync(FileMode.WRITE);
   file.writeStringSync(text);
   file.closeSync();
 }
 
 String readAll(String filename) {
   var file = (new File(filename)).openSync(FileMode.READ);
   var length = file.lengthSync();
-  var buffer = new List<int>(length);
+  var buffer = new List<int>.fixedLength(length);
   var bytes = file.readListSync(buffer, 0, length);
   file.closeSync();
   return new String.fromCharCodes(new Utf8Decoder(buffer).decodeRest());
 }
 
 void fail(String message) {
   print(message);
   exit(1);
 }
 
@@ skipping 126 matching lines @@
     } catch (ignored) {
       print('Internal error: error while printing exception');
     }
     try {
       print(trace);
     } finally {
       exit(253); // 253 is recognized as a crash by our test scripts.
     }
   }
 }