Roll src/third_party/skia/ c1889823d..c7be00366 (26 commits)

https://skia.googlesource.com/skia.git/+log/c1889823de68..c7be00366bb0

$ git log c1889823d..c7be00366 --date=short --no-merges --format='%ad %ae %s'
2017-04-25 mtklein remove to_2dot2 and from_2dot2
2017-04-26 bungeman Remove SK_IGNORE_GASP_VERSION_CHECK.
2017-04-25 bsalomon Link to vulkan in tools but not library.
2017-04-26 robertphillips Prevent creation of zero-sized proxies
2017-04-25 cblume Make SkNoncopyable movable
2017-04-21 mtklein Inject a dsb into SkAnalyticEdge::setLine() to work around ARMv7 CPU erratum.
2017-04-25 mtklein remove SkOpts::run_pipeline() declaration.
2017-04-25 benjaminwagner Update PixelC to latest build.
2017-04-25 bsalomon Add ability to relinquish control of VkDevice and VkInstance lifetime to GrVkBackendContext
2017-04-25 ethannicholas sksl can now fold constant vector or matrix equality expressions
2017-04-25 brianosman Fix writePixels of sRGB data to legacy GPU surface
2017-04-25 bsalomon Add GrVkInterface constructor with sepereate instance/device proc getters.
2017-04-25 stephana Disable msaa on all current iOS devices
2017-04-25 egdaniel Use system Vulkan headers except when no building with vulkan support
2017-04-25 msarett Make SkColorSpaceXformer::apply(SkPaint) safe to call recursively
2017-04-25 brianosman Remove compressed texture support from cacherator
2017-04-25 bungeman Improve variation comment for iOS.
2017-04-25 mtklein xform saveLayer() backdrop
2017-04-25 stephana Enable ios on Raspberry Pi
2017-04-24 msarett Balance save()/restore() calls in dont_clip_to_layer gm
2017-04-25 msarett Delete SkGTypeface and SkGScalerContext
2017-04-25 msarett SkMergeImageFilter: fModes might be nullptr
2017-04-25 brianosman Name 'client' parameter so comment makes sense
2017-04-19 halcanary SkDiscardableMemoryPool: modernize
2017-04-24 scroggo Improve the Codec_end test and add fixes
2017-04-24 robertphillips Rm makeRenderTargetContext in favor of deferred version (take 3)

Created with:
  roll-dep src/third_party/skia
BUG=710131


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_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
TBR=benjaminwagner@chromium.org

Change-Id: I7be0640ddc22b704be4d62f67ad2481606ecde48
Reviewed-on: https://chromium-review.googlesource.com/488122
Reviewed-by: Skia Deps Roller <skia-deps-roller@chromium.org>
Commit-Queue: Skia Deps Roller <skia-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#467345}

DEPS

@@ -40,7 +40,7 @@ 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': 'c1889823de68ffd2ef08b5c1969d41c98034ec6a',
+  'skia_revision': 'c7be00366bb0171e2d247ea71e291a64e3d10254',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.