Stop base::OpenFile from leaking fds/handles into child procs.

build/sanitizers/lsan_suppressions.cc

Index: build/sanitizers/lsan_suppressions.cc
diff --git a/build/sanitizers/lsan_suppressions.cc b/build/sanitizers/lsan_suppressions.cc
index 628589537b422b12ebeddf1048ba006ae97799f6..27a2426ad72ae69cd338d689d43ab3b4424e4f28 100644
--- a/build/sanitizers/lsan_suppressions.cc
+++ b/build/sanitizers/lsan_suppressions.cc
@@ -60,6 +60,9 @@ char kLSanDefaultSuppressions[] =
 // Leaks in swrast_dri.so. http://crbug.com/540042
 "leak:swrast_dri.so\n"
 
+// Leak in glibc's gconv caused by fopen(..., "r,ccs=UNICODE")
+"leak:__gconv_lookup_cache\n"
+
 // ================ Leaks in Chromium code ================
 // PLEASE DO NOT ADD SUPPRESSIONS FOR NEW LEAKS.
 // Instead, commits that introduce memory leaks should be reverted. Suppressing