Roll external/skia 3e45a2f48..f0a30d71a (9 commits)

https://skia.googlesource.com/skia.git/+log/3e45a2f48..f0a30d71a

2017-11-01 robertphillips@google.com Make matrix flip GM easier to triage
2017-11-01 benjaminwagner@google.com Add Win2k8 QuadroP400 jobs.
2017-11-01 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2017-11-01 csmartdalton@google.com Revert "Fold analytic clip FPs into GrReducedClip"
2017-11-01 benjaminwagner@google.com Upgrade GT610 to Win 10 Creators Update.
2017-11-01 angle-deps-roller@chromium.org Roll skia/third_party/externals/angle2/ 4751aabb7..25301b603 (1 commit)
2017-11-01 recipe-roller@chromium.org Roll recipe dependencies (nontrivial).
2017-11-01 csmartdalton@google.com Fold analytic clip FPs into GrReducedClip
2017-11-01 angle-deps-roller@chromium.org Roll skia/third_party/externals/angle2/ 63458a3ed..4751aabb7 (3 commits)

The AutoRoll server is located here: https://android-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

Test: Presubmit checks will test this change.
Change-Id: Ib3b57bd5ff50516fa7a1e7fbfcd8c5c243f166ea
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.