Roll external/skia 4e66df54e..136ad0984 (2 commits)
Roll external/skia 4e66df54e..136ad0984 (2 commits)

https://skia.googlesource.com/skia.git/+log/4e66df54e..136ad0984

2019-05-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/angle2 3dbe480b559e..f7033c55be3f (11 commits)
2019-05-14 skia-autoroll@skia-public.iam.gserviceaccount.com Roll ../src 97d5761990f6..156f1f758a0f (423 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
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Test: Presubmit checks will test this change.
Change-Id: I2636dae6ebe50622d41fc518251a41c0aa9211c4
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