Port SkBlitRow::Color32 to SkOpts.

src/opts/SkBlitRow_opts_arm.cpp

Index: src/opts/SkBlitRow_opts_arm.cpp
diff --git a/src/opts/SkBlitRow_opts_arm.cpp b/src/opts/SkBlitRow_opts_arm.cpp
index 5770c1f1d7d477f27ec8dd7ddcf6b1312baec0f5..24566ba6c5326a4d9a2e2a677862c56429440ff8 100644
--- a/src/opts/SkBlitRow_opts_arm.cpp
+++ b/src/opts/SkBlitRow_opts_arm.cpp
@@ -33,8 +33,3 @@ SkBlitRow::ColorProc16 SkBlitRow::PlatformColorFactory565(unsigned flags) {
 SkBlitRow::Proc32 SkBlitRow::PlatformProcs32(unsigned flags) {
     return SK_ARM_NEON_WRAP(sk_blitrow_platform_32_procs_arm)[flags];
 }
-
-SkBlitRow::Color32Proc SkBlitRow::PlatformColor32Proc() {
-    #define sk_blitrow_color32_arm nullptr
-    return SK_ARM_NEON_WRAP(sk_blitrow_color32_arm);
-}