We don't use boxBlurY.

src/opts/SkBlurImage_opts_arm.cpp

Index: src/opts/SkBlurImage_opts_arm.cpp
diff --git a/src/opts/SkBlurImage_opts_arm.cpp b/src/opts/SkBlurImage_opts_arm.cpp
index 10d595afa5911cc492baa4258508025c2085bfd2..c03e1aa4d4db6b941bdf65ca9dd6e5b832289795 100644
--- a/src/opts/SkBlurImage_opts_arm.cpp
+++ b/src/opts/SkBlurImage_opts_arm.cpp
@@ -9,7 +9,6 @@
 #include "SkUtilsArm.h"
 
 bool SkBoxBlurGetPlatformProcs(SkBoxBlurProc* boxBlurX,
-                               SkBoxBlurProc* boxBlurY,
                                SkBoxBlurProc* boxBlurXY,
                                SkBoxBlurProc* boxBlurYX) {
 #if SK_ARM_NEON_IS_NONE
@@ -20,6 +19,6 @@ bool SkBoxBlurGetPlatformProcs(SkBoxBlurProc* boxBlurX,
         return false;
     }
 #endif
-    return SkBoxBlurGetPlatformProcs_NEON(boxBlurX, boxBlurY, boxBlurXY, boxBlurYX);
+    return SkBoxBlurGetPlatformProcs_NEON(boxBlurX, boxBlurXY, boxBlurYX);
 #endif
 }