Revert "DeferredTextureImageData low-bit-depth/dithering support"

This reverts commit 2c075e749d1f33dea06ad2710e15c9a1d60ebced.

Reason for revert: Breaking tests. e.g.: https://chromium-swarm.appspot.com/task?id=369dc44f62ce9510&refresh=10

Original change's description:
> DeferredTextureImageData low-bit-depth/dithering support
> 
> Cause DeferredTextureImageData functionality to support low bit depth
> (4444, 565) image formats (with dithering).
> 
> Bug: 720105
> Change-Id: Ie3b5768ebc393d9b0a5322461c722bf37c80b791
> Reviewed-on: https://skia-review.googlesource.com/18945
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Eric Karl <ericrk@chromium.org>

TBR=bsalomon@google.com,ericrk@chromium.org
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 720105

Change-Id: I07aec722425efc62bc54f82cee9a19a9bf339f7b
Reviewed-on: https://skia-review.googlesource.com/19039
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/gm/deferredtextureimage.cpp b/gm/deferredtextureimage.cpp
index db070fc654..9c1fe6a6f2 100644
--- a/gm/deferredtextureimage.cpp
+++ b/gm/deferredtextureimage.cpp
@@ -154,13 +154,6 @@ DEF_SIMPLE_GM(deferred_texture_image_low, canvas, 512 + 512 + 30, 512 + 20) {
     DrawDeferredTextureImageData(canvas, &params);
 }
 
-DEF_SIMPLE_GM(deferred_texture_image_low_dithered, canvas, 512 + 512 + 30, 512 + 20) {
-    auto params = SkImage::DeferredTextureImageUsageParams(SkMatrix::MakeScale(0.25f, 0.25f),
-                                                           kLow_SkFilterQuality, 0,
-                                                           kARGB_4444_SkColorType);
-    DrawDeferredTextureImageData(canvas, &params);
-}
-
 DEF_SIMPLE_GM(deferred_texture_image_medium_encoded, canvas, 512 + 512 + 30, 1110) {
     sk_sp<SkImage> encodedImage = GetResourceAsImage("mandrill_512.png");
     if (!encodedImage) {