Update MediaViewer submodule

New changes:
    Fix patch which fixes the reuse dropdowns
    Ibe1c4c1e415952982049d7c581253bb5b8a2e500

    Fix garbled dropdown text
    I84683ef373409c808ccfaa3b0c3aafef813349b7

Change-Id: Ic9a4f975e1e88caab3ca9ca64474c7b0b80be224