Roll external/skia 6feb69123..f642cb337 (1 commits)
Roll external/skia 6feb69123..f642cb337 (1 commits)

https://skia.googlesource.com/skia.git/+log/6feb69123..f642cb337

2017-07-02 halcanary@google.com experimental/documentation/gerrit.md: check for error case

Test: Presubmit checks will test this change.
Change-Id: I2b58f88f73ffb9796d311df8895d34c17e8182dc

Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia