Suppress keepalive thread leak in DM.
BUG=skia:
Review URL: https://codereview.chromium.org/1006143002
diff --git a/tools/valgrind.supp b/tools/valgrind.supp
index d919c86..28429c0 100644
--- a/tools/valgrind.supp
+++ b/tools/valgrind.supp
@@ -1,5 +1,17 @@
# Pass this file to Valgrind with "--suppressions=tools/valgrind.supp"
+# Intentional thread / memory leak in DM.
+{
+ dm_keepalive_thread_leak
+ Memcheck:Leak
+ match-leak-kinds: possible
+ ...
+ fun:_ZN8SkThreadC1EPFvPvES0_
+ fun:_ZL15start_keepalivev
+ fun:_Z7dm_mainv
+ fun:main
+}
+
# Third party lib, driver issues.
{
ati_driver_bug_1