Roll external/skia 49d140dbad4d..42c6af9182d2 (2 commits)
Roll external/skia 49d140dbad4d..42c6af9182d2 (2 commits)

https://skia.googlesource.com/skia.git/+log/49d140dbad4d..42c6af9182d2

2019-08-21 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).
2019-08-21 recipe-mega-autoroller@chops-service-accounts.iam.gserviceaccount.com Roll recipe dependencies (trivial).

The AutoRoll server is located here: https://skia-autoroll.corp.goog/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: I27d6d6167d936e68a8c9b608f097c4a3cc65b33d
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