Merge latest Skia into master (2 commits)

https://skia.googlesource.com/skia.git/+log/70a309a..0831f1b

Test: Presubmit checks will test this change.
Change-Id: I68f06ec39c19a6c7f81637d937cfec501ab6dcc8
diff --git a/Android.bp b/Android.bp
index daaccac..aa98366 100644
--- a/Android.bp
+++ b/Android.bp
@@ -404,6 +404,7 @@
         "src/gpu/GrPrimitiveProcessor.cpp",
         "src/gpu/GrProcOptInfo.cpp",
         "src/gpu/GrProcessor.cpp",
+        "src/gpu/GrProcessorSet.cpp",
         "src/gpu/GrProcessorUnitTest.cpp",
         "src/gpu/GrProgramDesc.cpp",
         "src/gpu/GrRectanizer_pow2.cpp",