Prefer glDepthRangef and glClearDepthf to the double version. ES only has the float versions. BUG=angleproject:1145 Change-Id: I6c96b553d20e8aa160f68fe1b3fa0200d64108a3 Reviewed-on: https://chromium-review.googlesource.com/296361 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>