Publicly expose one accelerated swizzle.

tests/SwizzlerTest.cpp

Index: tests/SwizzlerTest.cpp
diff --git a/tests/SwizzlerTest.cpp b/tests/SwizzlerTest.cpp
index e1626d52f114d761c8ac3331d8d40205f8f955a7..1b34669f9780697809771bdceec1fdd8864950b8 100644
--- a/tests/SwizzlerTest.cpp
+++ b/tests/SwizzlerTest.cpp
@@ -5,6 +5,7 @@
  * found in the LICENSE file.
  */
 
+#include "SkSwizzle.h"
 #include "SkSwizzler.h"
 #include "Test.h"
 #include "SkOpts.h"
@@ -157,3 +158,12 @@ DEF_TEST(SwizzleOpts, r) {
     SkOpts::RGBA_to_bgrA(&dst, &src, 1);
     REPORTER_ASSERT(r, dst == 0xFA04ADCA);
 }
+
+DEF_TEST(PublicSwizzleOpts, r) {
+    uint32_t dst, src;
+
+    // check a totally arbitrary color
+    src = 0xFACEB004;
+    SkSwapRB(&dst, &src, 1);
+    REPORTER_ASSERT(r, dst == 0xFA04B0CE);
+}