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

src/conversions.cc

Index: src/conversions.cc
diff --git a/src/conversions.cc b/src/conversions.cc
index 4b41d5e6a8dda6138e71bfa4919412beec048578..69272b5aff4624de368a529a15bba6b7f2be2ddc 100644
--- a/src/conversions.cc
+++ b/src/conversions.cc
@@ -211,7 +211,7 @@ char* DoubleToFixedCString(double value, int f) {
   // 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));
   }