inline SkMulDiv now that 64bit mul is inlineable

src/core/SkMath.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkMathPriv.h"
 #include "SkFloatBits.h"
 #include "SkFloatingPoint.h"
@@ skipping 25 matching lines @@
     if (x & 0xC) {
         sub_shift(zeros, x, 2);
     }
     if (x & 0x2) {
         sub_shift(zeros, x, 1);
     }
 
     return zeros;
 }
 
-int32_t SkMulDiv(int32_t numer1, int32_t numer2, int32_t denom) {
-    SkASSERT(denom);
-
-    int64_t tmp = sk_64_mul(numer1, numer2) / denom;
-    return sk_64_asS32(tmp);
-}
-
 SkFixed SkFixedMul_portable(SkFixed a, SkFixed b) {
 #if defined(SkLONGLONG)
     return static_cast<SkFixed>((int64_t)a * b >> 16);
 #else
     int sa = SkExtractSign(a);
     int sb = SkExtractSign(b);
     // now make them positive
     a = SkApplySign(a, sa);
     b = SkApplySign(b, sb);
 
@@ skipping 224 matching lines @@
         int diff = cos2 + sin2 - SK_Fixed1;
         SkASSERT(SkAbs32(diff) <= 7);
     }
 #endif
 
     if (cosValuePtr) {
         *cosValuePtr = cosValue;
     }
     return sinValue;
 }