Eliminate mojo::Shell client lib class

components/leveldb/leveldb_apptest.cc

Index: components/leveldb/leveldb_apptest.cc
diff --git a/components/leveldb/leveldb_apptest.cc b/components/leveldb/leveldb_apptest.cc
index 076e9f7bd7b463fdd7014a5ce9629142ef450ca5..2a99adcd3ed9731cc44f32bb6477ea0dae21700c 100644
--- a/components/leveldb/leveldb_apptest.cc
+++ b/components/leveldb/leveldb_apptest.cc
@@ -28,8 +28,8 @@ class LevelDBApptest : public mojo::test::ApplicationTestBase {
   // Overridden from mojo::test::ApplicationTestBase:
   void SetUp() override {
     ApplicationTestBase::SetUp();
-    shell()->ConnectToInterface("mojo:filesystem", &files_);
-    shell()->ConnectToInterface("mojo:leveldb", &leveldb_);
+    connector()->ConnectToInterface("mojo:filesystem", &files_);
+    connector()->ConnectToInterface("mojo:leveldb", &leveldb_);
   }
 
   // Note: This has an out parameter rather than returning the |DirectoryPtr|,