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

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 00a1b16b415dda6bb0f2af2ad0800718e36e5116..a3061dc8303150415119fdbb7c954f7eb34548fa 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -632,7 +632,7 @@ const AstRawString* ParserTraits::GetNumberAsSymbol(Scanner* scanner) {
   double double_value = parser_->scanner()->DoubleValue();
   char array[100];
   const char* string =
-      DoubleToCString(double_value, Vector<char>(array, ARRAY_SIZE(array)));
+      DoubleToCString(double_value, Vector<char>(array, arraysize(array)));
   return ast_value_factory()->GetOneByteString(string);
 }