--- chromium-69.0.3497.100/build/config/compiler/BUILD.gn.orig
+++ chromium-69.0.3497.100/build/config/compiler/BUILD.gn
@@ -666,10 +666,10 @@
   # This flag enforces that member pointer base types are complete. It helps
   # prevent us from running into problems in the Microsoft C++ ABI (see
   # https://crbug.com/847724).
-  if (is_clang && !is_nacl && target_os != "chromeos" && !use_xcode_clang &&
-      (is_win || use_custom_libcxx)) {
-    cflags += [ "-fcomplete-member-pointers" ]
-  }
+  #if (is_clang && !is_nacl && target_os != "chromeos" && !use_xcode_clang &&
+  #    (is_win || use_custom_libcxx)) {
+  #  cflags += [ "-fcomplete-member-pointers" ]
+  #}
 
   # Pass the same C/C++ flags to the objective C/C++ compiler.
   cflags_objc += cflags_c