ozone gbm: whitelist 3 DRM ioctl code for native GpuMemoryBuffer.

content/common/BUILD.gn

Index: content/common/BUILD.gn
diff --git a/content/common/BUILD.gn b/content/common/BUILD.gn
index 17113e25a06a8099d7765d9d69f7964705dd648d..2d0350f8e56de3f6d3e064a0f8920c302fcefed8 100644
--- a/content/common/BUILD.gn
+++ b/content/common/BUILD.gn
@@ -6,6 +6,8 @@ import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/common/common.gni")
 import("//third_party/mojo/src/mojo/public/tools/bindings/mojom.gni")
+import("//ui/ozone/ozone.gni")
+
 if (is_mac) {
   import("//build/config/mac/mac_sdk.gni")
 }
@@ -463,6 +465,10 @@ source_set("common") {
 
   if (use_seccomp_bpf) {
     defines += [ "USE_SECCOMP_BPF" ]
+
+    if (use_vgem_map) {
+      defines += [ "USE_VGEM_MAP" ]
+    }
   } else {
     if (is_linux) {
       sources -= [