Revert of Templatize SkToXXX.

include/core/SkTypes.h

Index: include/core/SkTypes.h
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index d7a791163be3617b4c414d3f30d4da0982b141d0..1051f08ceaa807840cc361eb212e47377fed1ab2 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -256,20 +256,27 @@
  */
 typedef uint8_t SkBool8;
 
-#include "../private/SkTFitsIn.h"
-template <typename D, typename S> D SkTo(S s) {
-    SkASSERT(SkTFitsIn<D>(s));
-    return static_cast<D>(s);
-}
-#define SkToS8(x)    SkTo<int8_t>(x)
-#define SkToU8(x)    SkTo<uint8_t>(x)
-#define SkToS16(x)   SkTo<int16_t>(x)
-#define SkToU16(x)   SkTo<uint16_t>(x)
-#define SkToS32(x)   SkTo<int32_t>(x)
-#define SkToU32(x)   SkTo<uint32_t>(x)
-#define SkToInt(x)   SkTo<int>(x)
-#define SkToUInt(x)  SkTo<unsigned>(x)
-#define SkToSizeT(x) SkTo<size_t>(x)
+#ifdef SK_DEBUG
+    SK_API int8_t      SkToS8(intmax_t);
+    SK_API uint8_t     SkToU8(uintmax_t);
+    SK_API int16_t     SkToS16(intmax_t);
+    SK_API uint16_t    SkToU16(uintmax_t);
+    SK_API int32_t     SkToS32(intmax_t);
+    SK_API uint32_t    SkToU32(uintmax_t);
+    SK_API int         SkToInt(intmax_t);
+    SK_API unsigned    SkToUInt(uintmax_t);
+    SK_API size_t      SkToSizeT(uintmax_t);
+#else
+    #define SkToS8(x)   ((int8_t)(x))
+    #define SkToU8(x)   ((uint8_t)(x))
+    #define SkToS16(x)  ((int16_t)(x))
+    #define SkToU16(x)  ((uint16_t)(x))
+    #define SkToS32(x)  ((int32_t)(x))
+    #define SkToU32(x)  ((uint32_t)(x))
+    #define SkToInt(x)  ((int)(x))
+    #define SkToUInt(x) ((unsigned)(x))
+    #define SkToSizeT(x) ((size_t)(x))
+#endif
 
 /** Returns 0 or 1 based on the condition
 */