Revert 21502 - "Move OS::MemCopy and OS::MemMove out of platform to utils"

src/conversions-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CONVERSIONS_INL_H_
 #define V8_CONVERSIONS_INL_H_
 
 #include <limits.h>        // Required for INT_MAX etc.
 #include <float.h>         // Required for DBL_MAX and on Win32 for finite()
 #include <stdarg.h>
@@ skipping 40 matching lines @@
   }
   if (x < k2Pow52) {
     x += k2Pow52;
     uint32_t result;
 #ifndef V8_TARGET_BIG_ENDIAN
     Address mantissa_ptr = reinterpret_cast<Address>(&x);
 #else
     Address mantissa_ptr = reinterpret_cast<Address>(&x) + kIntSize;
 #endif
     // Copy least significant 32 bits of mantissa.
-    MemCopy(&result, mantissa_ptr, sizeof(result));
+    OS::MemCopy(&result, mantissa_ptr, sizeof(result));
     return negative ? ~result + 1 : result;
   }
   // Large number (outside uint32 range), Infinity or NaN.
   return 0x80000000u;  // Return integer indefinite.
 }
 
 
 inline double DoubleToInteger(double x) {
   if (std::isnan(x)) return 0;
   if (!std::isfinite(x) || x == 0) return x;
@@ skipping 604 matching lines @@
   SLOW_ASSERT(buffer_pos < kBufferSize);
   buffer[buffer_pos] = '\0';
 
   double converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent);
   return (sign == NEGATIVE) ? -converted : converted;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_CONVERSIONS_INL_H_