Replace our homegrown ARRAY_SIZE() with Chrome's arraysize().

src/strtod.cc

 // Copyright 2012 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.
 
 #include <stdarg.h>
 #include <cmath>
 
 #include "src/v8.h"
 
 #include "src/bignum.h"
@@ skipping 45 matching lines @@
   1000000000000000.0,
   10000000000000000.0,
   100000000000000000.0,
   1000000000000000000.0,
   10000000000000000000.0,
   100000000000000000000.0,  // 10^20
   1000000000000000000000.0,
   // 10^22 = 0x21e19e0c9bab2400000 = 0x878678326eac9 * 2^22
   10000000000000000000000.0
 };
-static const int kExactPowersOfTenSize = ARRAY_SIZE(exact_powers_of_ten);
+static const int kExactPowersOfTenSize = arraysize(exact_powers_of_ten);
 
 // Maximum number of significant digits in the decimal representation.
 // In fact the value is 772 (see conversions.cc), but to give us some margin
 // we round up to 780.
 static const int kMaxSignificantDecimalDigits = 780;
 
 static Vector<const char> TrimLeadingZeros(Vector<const char> buffer) {
   for (int i = 0; i < buffer.length(); i++) {
     if (buffer[i] != '0') {
       return buffer.SubVector(i, buffer.length());
@@ skipping 336 matching lines @@
 
   double guess;
   if (DoubleStrtod(trimmed, exponent, &guess) ||
       DiyFpStrtod(trimmed, exponent, &guess)) {
     return guess;
   }
   return BignumStrtod(trimmed, exponent, guess);
 }
 
 } }  // namespace v8::internal