getMaximumBitmapWidth() and getMaximumBitmapHeight() of DisplayListCanvas need HWUI cache instance. Since the initialization of the cache is asynchronous it may crash if not yet ready. Add a staticFence() call to guarantee the cache has been created prior issuing the call. Change-Id: I5ed9e5cc084444c8d1872a77fef50e294ae14e93 Signed-off-by: Thomas Buhot <thomas.buhot@intel.com> Signed-off-by: Zhiquan Liu <zhiquan.liu@intel.com>