Revert of Roll src/third_party/skia 4b3050b:846b022 (patchset #1 id:1 of https://codereview.chromium.org/1261943003/ )

Reason for revert:
See crbug.com/516860

Please fix the uninitialized access issue before next roll.  Thank you.

Original issue's description:
> Roll src/third_party/skia 4b3050b:846b022
>
> Summary of changes available at:
> https://chromium.googlesource.com/skia/+log/4b3050b..846b022
>
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
> TBR=mtklein@google.com
>
> Commits in this roll:
> 846b022 joshualitt@chromium.org Break LCD and Bitmap text dependency on hardcoded atlas values
> 1c005e4 scroggo@chromium.org Create a scanline decoder without creating a codec
> ddc726f joshualitt@chromium.org Add cheat sheet to wrangler doc
> dce5ce4 mtklein@chromium.org Port SkBlurImage opts to SkOpts.
> 562a66b mtklein@chromium.org Revert "Implement caching of filled paths in the tessellated path renderer." This reverts commit 468dfa72eb6694145487be17876804dfca3b7adb.
> dea6e1c reed@google.com update image bench to test gpu and cpu images against raster surface
> 6f1216a reed@google.com cache private readback for gpu-images
> fae0102 robertphillips@google.com Remove IGNORE_ROT_AA_RECT_OPT flag
>
> Committed: https://crrev.com/406a98d80d074521bb2848a9a023e71a9e155848
> Cr-Commit-Position: refs/heads/master@{#341789}

TBR=mtklein@google.com,mtklein@chromium.org,skia-deps-roller@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1256773004

Cr-Commit-Position: refs/heads/master@{#341818}

1 files changed, 1 insertions, 1 deletions

diff --git a/DEPS b/DEPS
index fa37171..72ded18 100644
--- a/DEPS
+++ b/DEPS
@@ -34,7 +34,7 @@ vars = {
   'chromium_git': 'https://chromium.googlesource.com',
   'libvpx_revision': 'd5c834797554016ff9eee05da9f3e4c1fd4fd819',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
-  'skia_revision': '846b022f6b469cfde285372f26e0d5c593d122ac',
+  'skia_revision': '4b3050b410254d0cb38df9a30ae2e209124fa1a2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.