NEON optimizations for GrayAlpha -> RGBA/BGRA Premul/Unpremul

src/core/SkOpts.h

Index: src/core/SkOpts.h
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
index b5286e4ec90c3f11530f3442dceb592ac21f2b1d..69da36254ce9986e4f3c952bf966a57a27a672cd 100644
--- a/src/core/SkOpts.h
+++ b/src/core/SkOpts.h
@@ -62,7 +62,9 @@ namespace SkOpts {
                         RGBA_to_bgrA,  // i.e. swap RB and premultiply
                         RGB_to_RGB1,   // i.e. insert an opaque alpha
                         RGB_to_BGR1,   // i.e. swap RB and insert an opaque alpha
-                        gray_to_RGB1;  // i.e. set color channels to same value + an opaque alpha
+                        gray_to_RGB1,  // i.e. expand to color channels + an opaque alpha
+                        grayA_to_RGBA, // i.e. expand to color channels
+                        grayA_to_rgbA; // i.e. expand to color channels and premultiply
 }
 
 #endif//SkOpts_DEFINED