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

src/strtod.cc

Index: src/strtod.cc
diff --git a/src/strtod.cc b/src/strtod.cc
index 64b7a29ef035b337a8d03fc5a853570ff4c68fc0..2b48af3cc60c93aeaadc9660d2e5e77c99268896 100644
--- a/src/strtod.cc
+++ b/src/strtod.cc
@@ -63,7 +63,7 @@ static const double exact_powers_of_ten[] = {
   // 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