Clear GCM data when the user clears cookies and other site data

components/gcm_driver/gcm_driver_desktop_unittest.cc

Index: components/gcm_driver/gcm_driver_desktop_unittest.cc
diff --git a/components/gcm_driver/gcm_driver_desktop_unittest.cc b/components/gcm_driver/gcm_driver_desktop_unittest.cc
index cec87efab94d97f113a47c54d7ceb6cf29928143..69b1bbe3253f8cead4f62f014da43e99e78252fa 100644
--- a/components/gcm_driver/gcm_driver_desktop_unittest.cc
+++ b/components/gcm_driver/gcm_driver_desktop_unittest.cc
@@ -258,7 +258,7 @@ void GCMDriverTest::SignIn(const std::string& account_id) {
 }
 
 void GCMDriverTest::SignOut() {
-  driver_->Purge();
+  driver_->OnSignedOut();
   PumpIOLoop();
   PumpUILoop();
 }