Revert "Do not build the ktx encoder for android framework"

This reverts commit eeb7137a0b421522de4c21c90fc3208e33e3a5a5.

Reason for revert: well, duh, I guess we'd better update the GYP and Google3 builds...

Original change's description:
> Do not build the ktx encoder for android framework
> 
> Move SkKTXImageEncoder.cpp into an optional block, and disable that
> block for the android framework. Use a new define to determine whether
> to define the entry point, rather than using
> SK_BUILD_FOR_ANDROID_FRAMEWORK.
> 
> Change-Id: I41103459135af744cf5715f27783c63dc37a7ad1
> Reviewed-on: https://skia-review.googlesource.com/5982
> Commit-Queue: Leon Scroggins <scroggo@google.com>
> Commit-Queue: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> 

TBR=mtklein@chromium.org,mtklein@google.com,scroggo@google.com,reviews@skia.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I8da75db31884b5148f7f85a6a0c3e6913b71cfa8
Reviewed-on: https://skia-review.googlesource.com/6021
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
3 files changed