Privatize StrongBinding lifetime management

services/ui/ws/window_server_test_impl.cc

Index: services/ui/ws/window_server_test_impl.cc
diff --git a/services/ui/ws/window_server_test_impl.cc b/services/ui/ws/window_server_test_impl.cc
index c2493c935b8b763e66026ca4095cf026e32ce2f4..ec44ec3f691fa3f2cf07eaa2454a77d88cafcc52 100644
--- a/services/ui/ws/window_server_test_impl.cc
+++ b/services/ui/ws/window_server_test_impl.cc
@@ -23,10 +23,8 @@ bool WindowHasValidFrame(const ServerWindow* window) {
 
 }  // namespace
 
-WindowServerTestImpl::WindowServerTestImpl(
-    WindowServer* window_server,
-    mojo::InterfaceRequest<WindowServerTest> request)
-    : window_server_(window_server), binding_(this, std::move(request)) {}
+WindowServerTestImpl::WindowServerTestImpl(WindowServer* window_server)
+    : window_server_(window_server) {}
 
 WindowServerTestImpl::~WindowServerTestImpl() {}