Move mojo and mojom from mojo/public/dart to mojo/dart/packages

mojo/dart/packages/mojom/test/generate_test.dart

Index: mojo/dart/packages/mojom/test/generate_test.dart
diff --git a/mojo/public/dart/mojom/test/generate_test.dart b/mojo/dart/packages/mojom/test/generate_test.dart
similarity index 96%
rename from mojo/public/dart/mojom/test/generate_test.dart
rename to mojo/dart/packages/mojom/test/generate_test.dart
index 21cdd411b8d5c63953a5cf108b5e17a813f969a8..b01de454668aaf2ef6ce39a18dbe90de94acb2a1 100644
--- a/mojo/public/dart/mojom/test/generate_test.dart
+++ b/mojo/dart/packages/mojom/test/generate_test.dart
@@ -27,8 +27,8 @@ main() async {
   if (Platform.environment['MOJO_SDK'] != null) {
     mojoSdk = Platform.environment['MOJO_SDK'];
   } else {
-    mojoSdk = path.normalize(
-        path.join(path.dirname(Platform.script.path), '..', '..', '..'));
+    mojoSdk = path.normalize(path.join(
+        path.dirname(Platform.script.path), '..', '..', '..', '..', 'public'));
   }
   if (!await new Directory(mojoSdk).exists()) {
     fail("Could not find the Mojo SDK");