tree ad0fe512399ed21a6c6de88ca7163cd23d4b9d77
parent ea9e1cb32d81207196e8c7f1e8ea2e9a6bc8c0e0
author bnc <bnc@google.com> 1623334426 -0700
committer Copybara-Service <copybara-worker@google.com> 1623334515 -0700

Remove QuicContainsKey() from platform.

There is no need to platformize this utility function.  Use contains() instead
for Abseil containers, and find() for std::map and std::set.  Note that
contains() exists for std::map and std::set but only since C++20 and is
therefore not supported yet.

PiperOrigin-RevId: 378644155