Move shell service to toplevel shell namespace

components/filesystem/file_system_app.cc

Index: components/filesystem/file_system_app.cc
diff --git a/components/filesystem/file_system_app.cc b/components/filesystem/file_system_app.cc
index a74eb7850fbb25b037c5d2cbd0be4a4f882c904f..14408e8af5be89595a982eb1f70b048fc53b08f9 100644
--- a/components/filesystem/file_system_app.cc
+++ b/components/filesystem/file_system_app.cc
@@ -37,19 +37,19 @@ FileSystemApp::FileSystemApp() : lock_table_(new LockTable) {}
 
 FileSystemApp::~FileSystemApp() {}
 
-void FileSystemApp::Initialize(mojo::Connector* connector,
-                               const mojo::Identity& identity,
+void FileSystemApp::Initialize(shell::Connector* connector,
+                               const shell::Identity& identity,
                                uint32_t id) {
   tracing_.Initialize(connector, identity.name());
 }
 
-bool FileSystemApp::AcceptConnection(mojo::Connection* connection) {
+bool FileSystemApp::AcceptConnection(shell::Connection* connection) {
   connection->AddInterface<FileSystem>(this);
   return true;
 }
 
 // |InterfaceFactory<Files>| implementation:
-void FileSystemApp::Create(mojo::Connection* connection,
+void FileSystemApp::Create(shell::Connection* connection,
                            mojo::InterfaceRequest<FileSystem> request) {
   new FileSystemImpl(connection, std::move(request), GetUserDataDir(),
                      lock_table_);