Roll src/third_party/skia/ 19b91531e..3d3a65c48 (10 commits).

https://chromium.googlesource.com/skia.git/+log/19b91531e912..3d3a65c48816

$ git log 19b91531e..3d3a65c48 --date=short --no-merges --format='%ad %ae %s'
2016-10-24 scroggo Rename GIFImageReader to SkGifImageReader
2016-10-24 bungeman Add gif sources to public.bzl.
2016-10-24 kjlubick Fix fuzzer's bools to be 0 or 1 only
2016-10-24 msarett Use SK_ALWAYS_INLINE in SkColorSpaceXform
2016-10-24 scroggo Clear background to white in animatedGif GM
2016-10-24 scroggo Include "SkBitmap.h" in CodecAnimTest.cpp
2016-10-24 raftias Refactored SkColorSpace_A2B to allow arbitrary ordering of elements
2016-10-24 mtklein Print what crashed DM on Android too.
2016-10-24 bungeman SkShader* refAs... to sk_sp<SkShader> makeAs...
2016-10-24 benjaminwagner Update trooper doc with chrome-infra chat.

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
TBR=reed@google.com

Review-Url: https://codereview.chromium.org/2444923004
Cr-Commit-Position: refs/heads/master@{#427155}

DEPS

@@ -39,7 +39,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '19b91531e912283d237435d94516575b28713cba',
+  'skia_revision': '3d3a65c488162ef1db0b35adf3235d012b04c88d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.