Roll external/skia 23d23892c..5f20fa292 (2 commits)

https://skia.googlesource.com/skia.git/+log/23d23892c..5f20fa292

2018-03-07 fmalita@chromium.org [skottie] Reduce parser verbosity
2018-03-07 reed@google.com add TrimPathEffect

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Change-Id: I78e49a5f4649e0cc5ab54df01f93a37f4d5e2c6e
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diff --git a/Android.bp b/Android.bp
index 501487d..46288a7 100644
--- a/Android.bp
+++ b/Android.bp
@@ -401,6 +401,7 @@
         "src/effects/SkTableMaskFilter.cpp",
         "src/effects/SkTileImageFilter.cpp",
         "src/effects/SkToSRGBColorFilter.cpp",
+        "src/effects/SkTrimPathEffect.cpp",
         "src/effects/SkXfermodeImageFilter.cpp",
         "src/gpu/GrAHardwareBufferImageGenerator.cpp",
         "src/gpu/GrAuditTrail.cpp",