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

src/conversions.cc

 // 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.
 
 #include <limits.h>
 #include <stdarg.h>
 #include <cmath>
 
 #include "src/v8.h"
 
@@ skipping 193 matching lines @@
   double abs_value = value;
   if (value < 0) {
     abs_value = -value;
     negative = true;
   }
 
   // If abs_value has more than kMaxDigitsBeforePoint digits before the point
   // use the non-fixed conversion routine.
   if (abs_value >= kFirstNonFixed) {
     char arr[100];
-    Vector<char> buffer(arr, ARRAY_SIZE(arr));
+    Vector<char> buffer(arr, arraysize(arr));
     return StrDup(DoubleToCString(value, buffer));
   }
 
   // Find a sufficiently precise decimal representation of n.
   int decimal_point;
   int sign;
   // Add space for the '\0' byte.
   const int kDecimalRepCapacity =
       kMaxDigitsBeforePoint + kMaxDigitsAfterPoint + 1;
   char decimal_rep[kDecimalRepCapacity];
@@ skipping 269 matching lines @@
     return StringToDouble(
         unicode_cache, flat.ToOneByteVector(), flags, empty_string_val);
   } else {
     return StringToDouble(
         unicode_cache, flat.ToUC16Vector(), flags, empty_string_val);
   }
 }
 
 
 } }  // namespace v8::internal