Roll external/skia 084fa1b52..569f12f0e (3 commits)

https://skia.googlesource.com/skia.git/+log/084fa1b52..569f12f0e

2019-06-13 brianosman@google.com Interpreter: Vectorized interpreter
2019-06-13 bsalomon@google.com Add load/store to SkRasterPipeline for 16161616 unsigned normalized.
2019-06-13 egdaniel@google.com Prefer top left origin in write pixels when doing copy as draw.

The AutoRoll server is located here: https://autoroll-internal.skia.org/r/android-master-autoroll

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: I460cafa10bddef4fefcc96c29bf5587e98c033d2
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.