Roll external/skia 652b007a4..a6b421c6c (2 commits)
Roll external/skia 652b007a4..a6b421c6c (2 commits)

https://skia.googlesource.com/skia.git/+log/652b007a4..a6b421c6c

2019-04-17 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 25be5bb97518..84c3a94e1450 (6 commits)
2019-04-17 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 95629c4c410f..a3585f70a100 (459 commits)

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: I9981002648f7ca3f2ca66ff241dcbd4b7b3ebeec
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.

aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia