Roll external/skia 6f59443c9..1c2052363 (8 commits)

https://skia.googlesource.com/skia.git/+log/6f59443c9..1c2052363

2019-01-31 reed@google.com fix tiler to handle large float rects
2019-01-31 brianosman@google.com Update tracing docs slightly
2019-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll skia/third_party/skcms cd2260c9f528..0c0f6dee2779 (1 commits)
2019-01-31 skia-autoroll@skia-public.iam.gserviceaccount.com Roll third_party/externals/swiftshader 5ebd2c0fafca..ebe5f7fad064 (1 commits)
2019-01-31 rmistry@google.com [cq.cfg] Remove cq.cfg.
2019-01-31 kjlubick@google.com Make cmake copy_directory instead of just files
2019-01-31 reed@google.com change measureText impl to first convert to glyphs
2019-01-31 egdaniel@google.com Add hardware buffer unit test from old skqp to skia.

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
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Test: Presubmit checks will test this change.
Change-Id: Iceb3a2b6fbabad2ab920e992e3703a1e8f9d1af0
Exempt-From-Owner-Approval: The autoroll bot does not require owner approval.
diff --git a/Android.bp b/Android.bp
index 6fa7de2..16c16ca 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1759,6 +1759,7 @@
         "tests/VerticesTest.cpp",
         "tests/VkBackendSurfaceTest.cpp",
         "tests/VkDrawableTest.cpp",
+        "tests/VkHardwareBufferTest.cpp",
         "tests/VkMakeCopyPipelineTest.cpp",
         "tests/VkWrapTests.cpp",
         "tests/VptrTest.cpp",