Add data-URI support class to dart:core (next to Uri).

sdk/lib/uri/uri_sources.gypi

Index: sdk/lib/uri/uri_sources.gypi
diff --git a/runtime/lib/convert_sources.gypi b/sdk/lib/uri/uri_sources.gypi
similarity index 65%
copy from runtime/lib/convert_sources.gypi
copy to sdk/lib/uri/uri_sources.gypi
index 0f3b46b87b20a4a8fe86db748dd3fc873c3d20c6..4fc3475ebd57e7dfd8dbdd72a1fd1c3449eefce4 100644
--- a/runtime/lib/convert_sources.gypi
+++ b/sdk/lib/uri/uri_sources.gypi
@@ -1,9 +1,9 @@
-# Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+# Copyright (c) 2015, 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.
 
 {
   'sources': [
-    'convert_patch.dart',
+    'uri.dart',
   ],
 }