Roll external/skia c6363b9fc..831d842b4 (2 commits)
Roll external/skia c6363b9fc..831d842b4 (2 commits)

https://skia.googlesource.com/skia.git/+log/c6363b9fc..831d842b4

2017-05-13 recipe-roller@chromium.org Roll recipe dependencies (trivial).
2017-05-13 recipe-roller@chromium.org Roll recipe dependencies (trivial).

Test: Presubmit checks will test this change.
Change-Id: I7ee563c5f425fd9fe7f132fd95cfc6ea24db1135

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