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

ppapi/proxy/OWNERS

Index: ppapi/proxy/OWNERS
diff --git a/ppapi/proxy/OWNERS b/ppapi/proxy/OWNERS
index 8d323232836a5c3629b642b584782eb5050b907b..172f398b8884a1634dd77b9e6c40ee664df6c7ca 100644
--- a/ppapi/proxy/OWNERS
+++ b/ppapi/proxy/OWNERS
@@ -1,27 +1,7 @@
 piman@chromium.org
 
-# Changes to IPC messages require a security review to avoid introducing
-# new sandbox escapes.
 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