Eliminate mojo::Shell client lib class

mojo/public/cpp/bindings/tests/versioning_apptest.cc

Index: mojo/public/cpp/bindings/tests/versioning_apptest.cc
diff --git a/mojo/public/cpp/bindings/tests/versioning_apptest.cc b/mojo/public/cpp/bindings/tests/versioning_apptest.cc
index 7c74c45fe88c3fc2ed3b8e0309ff430b3319e3fb..6b6a3f3a8e523b93e102a8d8d6479339f506f614 100644
--- a/mojo/public/cpp/bindings/tests/versioning_apptest.cc
+++ b/mojo/public/cpp/bindings/tests/versioning_apptest.cc
@@ -8,7 +8,7 @@
 #include "mojo/public/cpp/system/macros.h"
 #include "mojo/public/interfaces/bindings/tests/versioning_test_client.mojom.h"
 #include "mojo/shell/public/cpp/application_test_base.h"
-#include "mojo/shell/public/cpp/shell.h"
+#include "mojo/shell/public/cpp/connector.h"
 
 namespace mojo {
 namespace test {
@@ -24,7 +24,7 @@ class VersioningApplicationTest : public ApplicationTestBase {
   void SetUp() override {
     ApplicationTestBase::SetUp();
 
-    shell()->ConnectToInterface("mojo:versioning_test_service", &database_);
+    connector()->ConnectToInterface("mojo:versioning_test_service", &database_);
   }
 
   HumanResourceDatabasePtr database_;