This PR replaces the banned std::to_string with its //base counterparts. https://chromium.googlesource.com/chromium/src/+/main/styleguide/c++/c++-features.md#std_sto_i_l_ul_ll_ull_f_d_ld_to_string_banned
This PR replaces the banned std::to_string with its //base counterparts. https://chromium.googlesource.com/chromium/src/+/main/styleguide/c++/c++-features.md#std_sto_i_l_ul_ll_ull_f_d_ld_to_string_banned