Add PRESUBMIT rule to make sure IPC changes are security reviewed.

content/common/media/OWNERS

Index: content/common/media/OWNERS
diff --git a/content/common/media/OWNERS b/content/common/media/OWNERS
index bd15b3e0625ace17928f83594e9cad766ddc4513..5b281449c56877595d11498a724338477fa68053 100644
--- a/content/common/media/OWNERS
+++ b/content/common/media/OWNERS
@@ -1,27 +1,8 @@
 file://media/OWNERS
 tommi@chromium.org
 
-# For security review of IPC message files.
 per-file *_messages*.h=set noparent
-per-file *_messages*.h=dcheng@chromium.org
-per-file *_messages*.h=inferno@chromium.org
-per-file *_messages*.h=jln@chromium.org
-per-file *_messages*.h=jschuh@chromium.org
-per-file *_messages*.h=kenrb@chromium.org
-per-file *_messages*.h=mkwst@chromium.org
-per-file *_messages*.h=nasko@chromium.org
-per-file *_messages*.h=palmer@chromium.org
-per-file *_messages*.h=tsepez@chromium.org
-per-file *_messages*.h=wfh@chromium.org
+per-file *_messages*.h=file://ipc/SECURITY_OWNERS
 
-per-file *_param_traits.*=set noparent
-per-file *_param_traits.*=dcheng@chromium.org
-per-file *_param_traits.*=inferno@chromium.org
-per-file *_param_traits.*=jln@chromium.org
-per-file *_param_traits.*=jschuh@chromium.org
-per-file *_param_traits.*=kenrb@chromium.org
-per-file *_param_traits.*=mkwst@chromium.org
-per-file *_param_traits.*=nasko@chromium.org
-per-file *_param_traits.*=palmer@chromium.org
-per-file *_param_traits.*=tsepez@chromium.org
-per-file *_param_traits.*=wfh@chromium.org
+per-file *_param_traits*.*=set noparent
+per-file *_param_traits*.*=file://ipc/SECURITY_OWNERS