pkg/http_server: move to multi-lib layout

pkg/http_server/lib/src/http_body.dart

Index: pkg/http_server/lib/src/http_body.dart
diff --git a/pkg/http_server/lib/src/http_body.dart b/pkg/http_server/lib/src/http_body.dart
index 6eb4d3174c721778495c0527ec2de299ef4e6a3c..c40d284326294c298713104b1c8ca300033c2ca0 100644
--- a/pkg/http_server/lib/src/http_body.dart
+++ b/pkg/http_server/lib/src/http_body.dart
@@ -2,8 +2,13 @@
 // 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 http_server;
+library http_server.http_body;
 
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'http_body_impl.dart';
 
 /**
  * [HttpBodyHandler] is a helper class for processing and collecting
@@ -104,7 +109,7 @@ class HttpBodyHandler
    * for more information on `multipart/form-data`.
    */
   HttpBodyHandler({Encoding defaultEncoding: UTF8})
-      : _transformer = new _HttpBodyHandlerTransformer(defaultEncoding);
+      : _transformer = new HttpBodyHandlerTransformer(defaultEncoding);
 
   /**
    * Process and parse an incoming [HttpRequest]. The returned [HttpRequestBody]
@@ -115,7 +120,7 @@ class HttpBodyHandler
   static Future<HttpRequestBody> processRequest(
       HttpRequest request,
       {Encoding defaultEncoding: UTF8}) {
-    return _HttpBodyHandler.processRequest(request, defaultEncoding);
+    return HttpBodyHandlerImpl.processRequest(request, defaultEncoding);
   }
 
   /**
@@ -126,7 +131,7 @@ class HttpBodyHandler
   static Future<HttpClientResponseBody> processResponse(
       HttpClientResponse response,
       {Encoding defaultEncoding: UTF8}) {
-    return _HttpBodyHandler.processResponse(response, defaultEncoding);
+    return HttpBodyHandlerImpl.processResponse(response, defaultEncoding);
   }
 
   Stream<HttpRequestBody> bind(Stream<HttpRequest> stream) {