metrics_num_errors_  335 net/proxy/proxy_resolver_v8_tracing.cc   uint8 metrics_num_errors_;
metrics_num_errors_  564 net/proxy/proxy_resolver_v8_tracing.cc       base_name "NumErrors", metrics_num_errors_, 1, 10, 10);\
metrics_num_errors_ 1065 net/proxy/proxy_resolver_v8_tracing.cc     IncrementWithoutOverflow(&metrics_num_errors_);