Remove Sink and move CollectionSink to async.

sdk/lib/_internal/compiler/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.
 
 library compiler;
 
 import 'dart:async';
 import 'dart:uri';
 import 'implementation/apiimpl.dart';
 
 // Unless explicitly allowed, passing [:null:] for any argument to the
 // methods of library will result in an Error being thrown.
 
 /**
  * Returns a future that completes to the source corresponding to
  * [uri]. If an exception occurs, the future completes with this
  * exception.
  */
 typedef Future<String> CompilerInputProvider(Uri uri);
 
 /// Deprecated, please use [CompilerInputProvider] instead.
 typedef Future<String> ReadStringFromUri(Uri uri);
 
 /**
- * Returns a [Sink] that will serve as compiler output for the given
+ * Returns a [StreamSink] that will serve as compiler output for the given
  * component.
  *
  * Components are identified by [name] and [extension]. By convention,
  * the empty string [:"":] will represent the main script
  * (corresponding to the script parameter of [compile]) even if the
  * main script is a library. For libraries that are compiled
  * separately, the library name is used.
  *
  * At least the following extensions can be expected:
  *
  * * "js" for JavaScript output.
  * * "js.map" for source maps.
  * * "dart" for Dart output.
  * * "dart.map" for source maps.
  *
  * As more features are added to the compiler, new names and
  * extensions may be introduced.
  */
-typedef Sink<String> CompilerOutputProvider(String name, String extension);
+typedef StreamSink<String> CompilerOutputProvider(String name,
+                                                  String extension);
 
 /**
  * Invoked by the compiler to report diagnostics. If [uri] is
  * [:null:], so are [begin] and [end]. No other arguments may be
  * [:null:]. If [uri] is not [:null:], neither are [begin] and
  * [end]. [uri] indicates the compilation unit from where the
  * diagnostic originates. [begin] and [end] are zero-based character
  * offsets from the beginning of the compilaton unit. [message] is the
  * diagnostic message, and [kind] indicates indicates what kind of
  * diagnostic it is.
@@ skipping 112 matching lines @@
   final String name;
 
   /**
    * This constructor is not private to support user-defined
    * diagnostic kinds.
    */
   const Diagnostic(this.ordinal, this.name);
 
   String toString() => name;
 }