Revert "Revert "Switch to 8.1 SDK and d3dcompiler_47.dll""

This reverts commit 3cbdc34d4e90f6b51d5612e6f1d3ae632da47234.

This reverts back to using 8.1 and d3dcompiler_47, as chrome is now rolled forward.

Change-Id: I7ef4ebdbc32146b9ba6f551e376ac03ac71131ba
Reviewed-on: https://chromium-review.googlesource.com/229990
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Commit-Queue: Scott Graham <scottmg@chromium.org>
Tested-by: Scott Graham <scottmg@chromium.org>