diff -r 000000000000 -r 6474c204b198 ipc/chromium/src/third_party/libevent/test/rpcgen_wrapper.sh
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipc/chromium/src/third_party/libevent/test/rpcgen_wrapper.sh	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+#!/bin/sh
+# libevent rpcgen_wrapper.sh
+# Transforms event_rpcgen.py failure into success for make, only if
+# regress.gen.c and regress.gen.h already exist in $srcdir.  This
+# is needed for "make distcheck" to pass the read-only $srcdir build,
+# as with read-only sources fresh from tarball, regress.gen.[ch] will
+# be correct in $srcdir but unwritable.  This previously triggered
+# Makefile.am to create stub regress.gen.c and regress.gen.h in the
+# distcheck _build directory, which were then detected as leftover
+# files in the build tree after distclean, breaking distcheck.
+# Note that regress.gen.[ch] are not in fresh git clones, making
+# working Python a requirement for make distcheck of a git tree.
+
+exit_updated() {
+    echo "Updated ${srcdir}\regress.gen.c and ${srcdir}\regress.gen.h"
+    exit 0
+}
+
+exit_reuse() {
+    echo "event_rpcgen.py failed, ${srcdir}\regress.gen.\[ch\] will be reused." >&2
+    exit 0
+}
+
+exit_failed() {
+    echo "Could not generate regress.gen.\[ch\] using event_rpcgen.sh" >&2
+    exit 1
+}
+
+if [ -x /usr/bin/python2 ] ; then
+  PYTHON2=/usr/bin/python2
+elif [ "x`which python2`" != x ] ; then
+  PYTHON2=python2
+else
+  PYTHON2=python
+fi
+
+srcdir=$1
+srcdir=${srcdir:-.}
+${PYTHON2} ${srcdir}/../event_rpcgen.py ${srcdir}/regress.rpc
+case "$?" in
+ 0)
+    exit_updated
+    ;;
+ *)
+    test -r ${srcdir}/regress.gen.c -a -r ${srcdir}/regress.gen.h && \
+	exit_reuse
+    exit_failed
+    ;;
+esac