Add signal handler for low disk notification

chromeos/dbus/mock_cryptohome_client.h

Index: chromeos/dbus/mock_cryptohome_client.h
diff --git a/chromeos/dbus/mock_cryptohome_client.h b/chromeos/dbus/mock_cryptohome_client.h
index 35b683b628be4298e64d417f08860e216137b96c..bd84c61a683387be6697c31573c54b4997ec02f4 100644
--- a/chromeos/dbus/mock_cryptohome_client.h
+++ b/chromeos/dbus/mock_cryptohome_client.h
@@ -26,6 +26,9 @@ class MockCryptohomeClient : public CryptohomeClient {
                void(const AsyncCallStatusHandler& handler,
                     const AsyncCallStatusWithDataHandler& data_handler));
   MOCK_METHOD0(ResetAsyncCallStatusHandlers, void());
+  MOCK_METHOD1(SetLowDiskSpaceHandler,
+               void(const LowDiskSpaceHandler& handler));
+  MOCK_METHOD0(ResetLowDiskSpaceHandler, void());

[satorux1, 2016/06/28 01:13:34]

please remove this.

[dspaid, 2016/06/28 01:44:02]

Done.

   MOCK_METHOD1(WaitForServiceToBeAvailable,
                void(const WaitForServiceToBeAvailableCallback& callback));
   MOCK_METHOD1(IsMounted, void(const BoolDBusMethodCallback& callback));