Roll src/third_party/skia 6fbdeef:a83eead

Roll src/third_party/skia 6fbdeef:a83eead

Summary of changes available at:
https://chromium.googlesource.com/skia/+log/6fbdeef..a83eead

CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
TBR=egdaniel@google.com

Commits in this roll:
a83eead joshualitt@google.com Revert of stop dropping AA when rect stays rect (patchset #8 id:140001 of https://codereview.chromium.org/1295523002/ )
f5fb939 halcanary@google.com SkPDF: Move SkFlate into src/pdf (part 3/3)
9a106ba mtklein@chromium.org A bit of misc cleanup.
090ae8e joshualitt@chromium.org fix valgrind issue
40ac15a joshualitt@chromium.org fix viewmatrix mapping in AAFillRect
540e488 egdaniel@google.com Add include paths in gputest.gyp for use by additional gpu tests.
820bffb mtklein@chromium.org Build all GMs on Android.
cc2feb1 scroggo@chromium.org Support more swizzles to 565 in SkCodec
8f4ba76 emmaleer@google.com SkScaledCodec class
1bef9f5 joshualitt@chromium.org stop dropping AA when rect stays rect
b0a32cc egdaniel@google.com Revert of SkScaledCodec class (patchset #35 id:680001 of https://codereview.chromium.org/1260673002/ )
2ba7099 joshualitt@chromium.org Add GM to test drawing atlas case

Review URL: https://codereview.chromium.org/1288003005

Cr-Commit-Position: refs/heads/master@{#343480}