floss: Build fixes for clang-14

With C++17 on Clang-14, there are additional deprecation messages and
missing includes that need to be handled:

* std::iterator replaced with using aliases.
* std::unary_function and std::binary_function replaced
* Add missing <vector> and <array>

Bug: 176837458
Tag: #floss
Test: ./build.py
Change-Id: I34139433a2dd2fa851de345df407d4b922d6ebd8