Make skia almost compile again with clang.

src/core/Sk64.cpp

 /*
  * Copyright 2006 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 "Sk64.h"
 #include "SkMathPriv.h"
 
@@ skipping 115 matching lines @@
 
 void Sk64::abs()
 {
     if (fHi < 0)
     {
         fHi = -fHi - Sk32ToBool(fLo);
         fLo = 0 - fLo;
     }
 }
 
-////////////////////////////////////////////////////////////////
-
-static inline int32_t round_right_16(int32_t hi, uint32_t lo)
-{
-    uint32_t sum = lo + (1 << 15);
-    hi += (sum < lo);
-    return (hi << 16) | (sum >> 16);
-}
-
 SkBool Sk64::isFixed() const
 {
     Sk64 tmp = *this;
     tmp.roundRight(16);
     return tmp.is32();
 }
 
 SkFract Sk64::getFract() const
 {
     Sk64 tmp = *this;
@@ skipping 190 matching lines @@
         else
             N.roundRight(-shiftN);
         N.div(D.get32(), Sk64::kTrunc_DivOption);
         if (N.is32())
             result = N.get32();
         else
             result = SK_MaxS32;
     }
     return SkApplySign(result, sign);
 }