Roll external/skia 62c6bd910..4504a652c (12 commits)

https://skia.googlesource.com/skia.git/+log/62c6bd910..4504a652c

2018-10-03 michaelludwig@google.com Remove extraneous comma in printf vargs
2018-10-03 bsalomon@google.com Always turn off domain in GrTextureOp for no-aa/nearest
2018-10-03 mtklein@google.com looks like Animation can use SkNVRefCnt?
2018-10-03 scroggo@google.com Fix-up colorSpace-less decodes
2018-10-03 michaelludwig@google.com Make ProcessorOptimizationValidationTest more forgiving
2018-10-03 csmartdalton@google.com ccpr: Remove the Mac+Radeon GL blacklist
2018-10-03 brianosman@google.com Remove SkPM4f
2018-10-03 scroggo@google.com Remove SkCodec::fSrcInfo
2018-10-03 mtklein@google.com remove SkColorSpaceXform
2018-10-03 egdaniel@google.com Pass a VkRenderPass through pipeline state creation instead of GrVkRenderPass.
2018-10-03 reed@google.com remove some dead flags
2018-10-03 mtklein@google.com rehome SkColorSpace <-> skcms_Profile routines

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
be CC'd on the roll, and stop the roller if necessary.

Test: Presubmit checks will test this change.
Change-Id: I46033179500483341ed057f6a3fa5499dfaae8cc
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.