Make the dart:developer library available in DDC so debugger statement works

pkg/dev_compiler/tool/input_sdk/lib/developer/developer_sources.gypi

Index: pkg/dev_compiler/tool/input_sdk/lib/developer/developer_sources.gypi
diff --git a/pkg/dev_compiler/tool/input_sdk/lib/developer/developer_sources.gypi b/pkg/dev_compiler/tool/input_sdk/lib/developer/developer_sources.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..91596a3796af89991d9f159f6d2a5a517d625c1d
--- /dev/null
+++ b/pkg/dev_compiler/tool/input_sdk/lib/developer/developer_sources.gypi
@@ -0,0 +1,14 @@
+# Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file

[vsm, 2016/11/29 22:45:09]

Should be able to drop this 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': [
+    'developer.dart',
+    # The above file needs to be first if additional parts are added to the lib.
+    'extension.dart',
+    'profiler.dart',
+    'service.dart',
+    'timeline.dart',
+  ],
+}