Eliminate mojo::Shell client lib class

components/filesystem/public/cpp/prefs/pref_service_factory.cc

Index: components/filesystem/public/cpp/prefs/pref_service_factory.cc
diff --git a/components/filesystem/public/cpp/prefs/pref_service_factory.cc b/components/filesystem/public/cpp/prefs/pref_service_factory.cc
index 5c75bb62c6c1d3baa3bfcebedf0517568cfcf5b6..add4532e54c86603461ec488418a93cadc4009e9 100644
--- a/components/filesystem/public/cpp/prefs/pref_service_factory.cc
+++ b/components/filesystem/public/cpp/prefs/pref_service_factory.cc
@@ -12,7 +12,7 @@
 #include "components/prefs/pref_value_store.h"
 #include "components/prefs/value_map_pref_store.h"
 #include "components/prefs/writeable_pref_store.h"
-#include "mojo/shell/public/cpp/shell.h"
+#include "mojo/shell/public/cpp/connector.h"
 
 namespace filesystem {
 
@@ -23,10 +23,10 @@ void DoNothingHandleReadError(PersistentPrefStore::PrefReadError error) {}
 
 }  // namespace
 
-scoped_ptr<PrefService> CreatePrefService(mojo::Shell* shell,
+scoped_ptr<PrefService> CreatePrefService(mojo::Connector* connector,
                                           PrefRegistry* pref_registry) {
   filesystem::FileSystemPtr filesystem;
-  shell->ConnectToInterface("mojo:filesystem", &filesystem);
+  connector->ConnectToInterface("mojo:filesystem", &filesystem);
 
   scoped_refptr<FilesystemJsonPrefStore> user_prefs =
       new FilesystemJsonPrefStore("preferences.json", std::move(filesystem),