 +          WS_EX_NOREDIRECTIONBITMAP,
 +      reinterpret_cast<wchar_t*>(g_window_class), L"",
        WS_CHILDWINDOW | WS_DISABLED | WS_VISIBLE, 0, 0, size.width(),
-       size.height(), *parent_window, NULL, NULL, NULL);
+       size.height(), *parent_window, nullptr, nullptr, nullptr);
    CHECK(window);
    *child_window = window;
 -  gfx::SetWindowUserData(window, shared_data);

removed after upgraded to Chrome 72.

diff --git a/gpu/ipc/service/child_window_win.cc b/gpu/ipc/service/child_window_win.cc
index d531234..3cce23e 100644
--- a/gpu/ipc/service/child_window_win.cc
+++ b/gpu/ipc/service/child_window_win.cc
@@ -9,7 +9,6 @@

 #include "base/win/scoped_hdc.h"
 #include "base/win/wrapped_window_proc.h"
 #include "gpu/ipc/common/gpu_messages.h"
@@ -21,48 +20,10 @@
 
 namespace gpu {
 
