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This reverts commit 86c790e6.

Reason for revert: This is causing performance / memory regressions that are trickier to address than expected. Reverting this for now.

Original change's description:
> Remove use of DeferredTextureImageData APIs and Support Decode to Scale
> 
> We aren't benefitting from the complexity added by the
> DeferredTextureImageData APIs, and this API blocks us from using
> PaintImage::Decode's decode-to-scale functionality.
> 
> This change removes our usage of DeferredTextureImageData APIs,
> instead using SkImage::makeTextureImage to handle upload. Additionally,
> we now use the PaintImage::Decode API, adding decode-to-scale support.
> 
> Bug: 773799
> Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
> Change-Id: Ia5f480213c3a5c8225ccd289aa2c081056840f94
> Reviewed-on: https://chromium-review.googlesource.com/713593
> Reviewed-by: vmpstr <vmpstr@chromium.org>
> Commit-Queue: Eric Karl <ericrk@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#517206}

TBR=vmpstr@chromium.org,ericrk@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 773799
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: Ie4493559e334100f03dfed1dfb7a408fc26a33e0
Reviewed-on: https://chromium-review.googlesource.com/830587
Commit-Queue: Eric Karl <ericrk@chromium.org>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524613}