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

chromecast/common/media/OWNERS

Index: chromecast/common/media/OWNERS
diff --git a/chromecast/common/media/OWNERS b/chromecast/common/media/OWNERS
index b4e262d45b4d6c651bac19dc7049e144f7372147..24bcf83b1222229be8e29ad112bc656e74d1b938 100644
--- a/chromecast/common/media/OWNERS
+++ b/chromecast/common/media/OWNERS
@@ -1,25 +1,5 @@
-# Changes to IPC messages require a security review to avoid introducing
-# new sandbox escapes.
 per-file *_message*.h=set noparent
-per-file *_message*.h=dcheng@chromium.org
-per-file *_message*.h=inferno@chromium.org
-per-file *_message*.h=jln@chromium.org
-per-file *_message*.h=jschuh@chromium.org
-per-file *_message*.h=kenrb@chromium.org
-per-file *_message*.h=mkwst@chromium.org
-per-file *_message*.h=nasko@chromium.org
-per-file *_message*.h=palmer@chromium.org
-per-file *_message*.h=tsepez@chromium.org
-per-file *_message*.h=wfh@chromium.org
+per-file *_message*.h=file://ipc/SECURITY_OWNERS
 
 per-file *_messages.cc=set noparent
-per-file *_messages.cc=dcheng@chromium.org
-per-file *_messages.cc=inferno@chromium.org
-per-file *_messages.cc=jln@chromium.org
-per-file *_messages.cc=jschuh@chromium.org
-per-file *_messages.cc=kenrb@chromium.org
-per-file *_messages.cc=mkwst@chromium.org
-per-file *_messages.cc=nasko@chromium.org
-per-file *_messages.cc=palmer@chromium.org
-per-file *_messages.cc=tsepez@chromium.org
-per-file *_messages.cc=wfh@chromium.org
+per-file *_messages.cc=file://ipc/SECURITY_OWNERS