914cf06b27
Plus it is required by the fetch polyfill, see https://github.com/github/fetch#installation Also see https://github.com/github/fetch/issues/114 This fixes the undefined Promise error in internet explorer 11, due to Promises not being supported in Internet explorer and other browsers. See http://caniuse.com/#feat=promises Bug: Issue 4308 Change-Id: I93df9c89a9a98059292038dffe1655c3f4d503c5