Use implicit_cast<> instead of static_cast<> whenever possible

util/net/http_body.cc

Index: util/net/http_body.cc
diff --git a/util/net/http_body.cc b/util/net/http_body.cc
index 65d21ebe0479fcc828566146611299991646d294..cd31ab4fa568f45dc6e1c41db087393367ebd3d5 100644
--- a/util/net/http_body.cc
+++ b/util/net/http_body.cc
@@ -43,7 +43,7 @@ ssize_t StringHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, size_t max_len) {
 
   size_t num_bytes_returned =
       std::min(std::min(num_bytes_remaining, max_len),
-               static_cast<size_t>(std::numeric_limits<ssize_t>::max()));
+               implicit_cast<size_t>(std::numeric_limits<ssize_t>::max()));
   memcpy(buffer, &string_[bytes_read_], num_bytes_returned);
   bytes_read_ += num_bytes_returned;
   return num_bytes_returned;