Revert "Remove copyTo() legacy API flag from bzl"

This reverts commit 65083e444c03cedecf45bc38bb8fea27e91e0a9e.

Reason for revert: Causes build failures.

Original change's description:
> Remove copyTo() legacy API flag from bzl
> 
> NOTRY=true
> 
> Bug: skia:6464
> Change-Id: Ia3935998960054df9e54cfb2aead66549c629c04
> Reviewed-on: https://skia-review.googlesource.com/15001
> Reviewed-by: Matt Sarett <msarett@google.com>
> Commit-Queue: Matt Sarett <msarett@google.com>
> 

TBR=msarett@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I9d82c7b699e106238981e32553e975c91e42cfb8
Reviewed-on: https://skia-review.googlesource.com/15021
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
1 file changed