[cros,rlz] Financial ping livelock fix and proper shutdown.

rlz/lib/rlz_lib.cc

Index: rlz/lib/rlz_lib.cc
diff --git a/rlz/lib/rlz_lib.cc b/rlz/lib/rlz_lib.cc
index 0f67cd464e13c2591403b721f7e154b08a15e3b0..a820d278944d4af0f6e9a0b96faf300ce83fb9ce 100644
--- a/rlz/lib/rlz_lib.cc
+++ b/rlz/lib/rlz_lib.cc
@@ -222,6 +222,10 @@ bool SetURLRequestContext(net::URLRequestContextGetter* context) {
 void RLZ_LIB_API SetIOTaskRunner(base::SequencedTaskRunner* io_task_runner) {
   RlzValueStoreChromeOS::SetIOTaskRunner(io_task_runner);
 }
+
+void RLZ_LIB_API CleanupRlz() {
+  RlzValueStoreChromeOS::Cleanup();
+}
 #endif
 
 bool GetProductEventsAsCgi(Product product, char* cgi, size_t cgi_size) {