Revert^2 "Update D8 R8 to 8.5.6-dev"

This reverts commit bf62fee82e083e69e30a0b9128ac366df4215ac2.

Reason for revert: Reland to fix b/335809645 (root cause fixed by aosp/3049902)

Fixes: 335809645
Fixes: 335209102
Change-Id: I47f8a0051c32ea74a4c414f4a835ed4c0fc069d7
4 files changed