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

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

This reverts commit 0122af08f6af0dee490e1a4f35b552377d0d4753.

Reason for revert: Fixed Android callsite

Original change's description:
> 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>
>

TBR=msarett@google.com,reviews@skia.org,reed@google.com

Change-Id: I81659a820f79f1958fda23cb62513065b57db99d
Reviewed-on: https://skia-review.googlesource.com/14640
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>