Remove callers of mojo::Array<size_t> constructor in favor of ::New

mojo/services/files/public/c/lib/file_fd_impl.cc

Index: mojo/services/files/public/c/lib/file_fd_impl.cc
diff --git a/mojo/services/files/public/c/lib/file_fd_impl.cc b/mojo/services/files/public/c/lib/file_fd_impl.cc
index 1feabddf8aca160827779bae07605c98a8ed5f30..d13cf6bbcbf96b02e7fa6be511dd83bf477fa30c 100644
--- a/mojo/services/files/public/c/lib/file_fd_impl.cc
+++ b/mojo/services/files/public/c/lib/file_fd_impl.cc
@@ -181,7 +181,7 @@ mojio_ssize_t FileFDImpl::Write(const void* buf, size_t count) {
   }
 
   // TODO(vtl): Is there a more natural (or efficient) way to do this?
-  mojo::Array<uint8_t> bytes_to_write(count);
+  auto bytes_to_write = mojo::Array<uint8_t>::New(count);
   if (count > 0)
     memcpy(&bytes_to_write[0], buf, count);