Remove SK_MaxSizeT, SK_M{in|ax}U{16|32}, #defines.

sed 's/SK_MaxSizeT/SIZE_MAX/g'
sed 's/SK_MaxU32/UINT32_MAX/g'
sed 's/SK_MaxU16/UINT16_MAX/g'

SK_MinU32 and SK_MinU16 were unused

Change-Id: I6b6c824df47b05bde7e73b13a58e851a5f63fe0e
Reviewed-on: https://skia-review.googlesource.com/134607
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index 7514634..2fe28fc 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -115,17 +115,12 @@
 */
 #define SkToBool(cond)  ((cond) != 0)
 
-#define SK_MaxS16   32767
-#define SK_MinS16   -32767
-#define SK_MaxU16   0xFFFF
-#define SK_MinU16   0
-#define SK_MaxS32   0x7FFFFFFF
+#define SK_MaxS16   INT16_MAX
+#define SK_MinS16   -SK_MaxS16
+#define SK_MaxS32   INT32_MAX
 #define SK_MinS32   -SK_MaxS32
-#define SK_MaxU32   0xFFFFFFFF
-#define SK_MinU32   0
-#define SK_NaN32    ((int) (1U << 31))
-#define SK_MaxSizeT SIZE_MAX
-static constexpr int64_t SK_MaxS64 = 0x7FFFFFFFFFFFFFFF;
+#define SK_NaN32    INT32_MIN
+static constexpr int64_t SK_MaxS64 = INT64_MAX;
 static constexpr int64_t SK_MinS64 = -SK_MaxS64;
 
 static inline constexpr int32_t SkLeftShift(int32_t value, int32_t shift) {