Revert "Delete copyTo(Allocator), hide copyTo() behind flag"

Revert "Delete copyTo(Allocator), hide copyTo() behind flag"

This reverts commit d4a338f4d0a0cdc08d7d3668931c60997f0fa971.

Reason for revert: Looks like I missed something I was supposed to delete in Android.

Original change's description:
> Delete copyTo(Allocator), hide copyTo() behind flag
>
> Replace uses of copyTo() in Skia.
>
> Bug: skia:6464
> Change-Id: I921dc53a1c29a5176d18f05741f7c0b5a008e548
> Reviewed-on: https://skia-review.googlesource.com/14502
> Commit-Queue: Matt Sarett <msarett@google.com>
> Reviewed-by: Mike Reed <reed@google.com>
>

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

Change-Id: I4d252940cc6a2462b030007055ea6c229471fc6e
Reviewed-on: https://skia-review.googlesource.com/14602
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Matt Sarett <msarett@google.com>