Roll src/third_party/skia/ 9d08cbc8c..79418093c (46 commits).

https://chromium.googlesource.com/skia.git/+log/9d08cbc8c613..79418093c1bb

$ git log 9d08cbc8c..79418093c --date=short --no-merges --format='%ad %ae %s'
2016-08-26 caryclark if the winding of the top can't be computed, give up
2016-08-26 mtklein GN: support compiler_prefix, use it for ccache on bots.
2016-08-26 halcanary SkPDF: Glyph validation change
2016-08-26 fmalita drawBitmapRect() should not touch the CTM when mask filters are present
2016-08-26 msarett Reduce CPU overhead on drawRegion()
2016-08-26 brianosman Fix angle build on Ubuntu
2016-08-26 bungeman Expat target exports includes instead of FreeType.
2016-08-26 mtklein Add Mac NDK asset, and fetch NDK on Android compile bots.
2016-08-26 egdaniel Don't add the resolve attachment to vulkan render passes.
2016-08-26 ethannicholas fixed 'corners' of paths in GrAAConvexTessellator
2016-08-26 mtklein add an asset for the Linux Android NDK.
2016-08-26 bsalomon Converts a drawPaint through a rrect clip to a drawRRect in GrDrawContext.
2016-08-26 brianosman Update ANGLE to latest as of August 25, 2016
2016-08-26 fmalita Remove SVG serialization suppressions
2016-08-26 fmalita Add imagemasksubset GM
2016-08-26 drott Restrict supported font formats in Chrome context
2016-08-26 robertphillips Move work from ctor to onOnceBeforeDraw in ShowMipLevel GMs
2016-08-26 caryclark avoid generating degenerate conic from arc
2016-08-26 vjiaoblack Added distance attenuation and diffuse shading to PointLights
2016-08-26 jvanverth Fix for fat stroked roundrects.
2016-08-26 mtklein GN: mac host and armv7 target
2016-08-26 bungeman SkOSFile instead of dirent in android font parser.
2016-08-26 bsalomon Fix bounds check in grshape test GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2274113004
2016-08-26 msarett drawRegion() cleanups
2016-08-26 robertphillips Ignore fill when stroke & filling convex line-only paths
2016-08-25 msarett GPU implementation of drawRegion()
2016-08-25 mtklein GN: Android
2016-08-25 msarett Add drawRegion() API to SkCanvas
2016-08-25 egdaniel Add support for getting vulkan descriptor sets without a GrVkUniformHandler.
2016-08-25 liyuqian Do not spam the debugging information
2016-08-25 bsalomon Respecify SkCanvas::drawArc, consolidate conversion to SkPath, add GM for oddball drawArcs
2016-08-25 caryclark path ops stream-lining
2016-08-25 halcanary SkDrawCommand: hinting
2016-08-25 jcgregorio BUILD.gn: Fix fiddle raster.
2016-08-25 halcanary SkPDF: Stop `#include PREPROCESSOR_DEFINE` pattern
2016-08-25 brianosman Remove pixel config fallback - failing is a better option.
2016-08-25 mtklein update Android auto-detection.
2016-08-25 fmalita Reland: Experimental parsing expression grammar (PEG) template library
2016-08-25 jvanverth Add Ganesh support for circular roundrects with strokes > 2*radii.
2016-08-25 bsalomon Make bleed GM produce consistent bitmaps on all platforms GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2264133003
2016-08-25 vjiaoblack Made shadows blurry (thru implementing variance mapping)
2016-08-25 hcm Update Skia milestone to 55
2016-08-25 jvanverth Add fat stroke test case to roundrects GM.
2016-08-25 fmalita Revert of Experimental parsing expression grammar (PEG) template library (patchset #8 id:140001 of https://codereview.chromium.org/2271743002/ )
2016-08-25 caryclark add pathops debugging
2016-08-25 anmittal Add neon and crc32 sources for aarch64

BUG=641478,625995

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

Review-Url: https://codereview.chromium.org/2284953003
Cr-Commit-Position: refs/heads/master@{#414892}

DEPS

@@ -36,7 +36,7 @@ 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': '9d08cbc8c6131ff61a1e71cc5c8cf27841d62b42',
+  'skia_revision': '79418093c1bbae215e074d7e80dba29bbf960366',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.