Fork some more files from the old framework, so that the transition will be easier to perform.

sky/sdk/lib/mojo/shell.dart

Index: sky/sdk/lib/mojo/shell.dart
diff --git a/sky/sdk/lib/framework/shell.dart b/sky/sdk/lib/mojo/shell.dart
similarity index 99%
copy from sky/sdk/lib/framework/shell.dart
copy to sky/sdk/lib/mojo/shell.dart
index e9ff1b75980744b2f68bd5e2aa1619b48a45ec6b..8961f727f9bfd6a2abe85326b101c15305712d3d 100644
--- a/sky/sdk/lib/framework/shell.dart
+++ b/sky/sdk/lib/mojo/shell.dart
@@ -3,10 +3,12 @@
 // found in the LICENSE file.
 
 import "dart:sky.internals" as internals;
-import "embedder.dart";
+
 import "package:mojo/application.dart";
-import 'package:mojo/core.dart' as core;
 import "package:mojom/mojo/service_provider.mojom.dart";
+import 'package:mojo/core.dart' as core;
+
+import "embedder.dart";
 
 ApplicationConnection _initConnection() {
   int rawHandle = internals.takeServicesProvidedByEmbedder();