Roll external/skia 7633477b6..4c6e4103a (1 commits)
Roll external/skia 7633477b6..4c6e4103a (1 commits)

https://skia.googlesource.com/skia.git/+log/7633477b6..4c6e4103a

2017-05-06 reed@google.com impl 4f version for tricolor shader

Test: Presubmit checks will test this change.
Change-Id: I47f513b78671d31d1fd25bdf4fe96476afb00cc9

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