Copy d3dcompiler_47.dll on ARM64 Windows builds Previously d3dcompiler_47.dll was not copied because this DLL is an inbox component on ARM64 Windows. However the inbox is not necessarily updated frequently enough, so we should copy (and ship) this DLL on ARM64 Windows as well as on other Windows architectures. Bug: chromium:1416385, chromium:1406077 Change-Id: I463f215012c2b48f11c8f40e104c22622afa6b2a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4285717 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>