Bug#910300: check libsrtp build dependency

[Bernhard Schmidt <berni@debian.org>]

Package: src:qtwebengine-opensource-src
Version: 5.11.1+dfsg-5
Severity: normal

Hi,

you are currently build-depending on libsrtp-dev, which is a virtual package
provided by src:srtp. We would like to get rid of that package in favour of
src:libsrtp2.

According to the latest build log your build system is not detecting the
presence of srtp anyway

Checking for srtp... no
[...]
  Optional system libraries used:
    re2 .................................. yes
    icu .................................. yes
    libwebp, libwebpmux and libwebpdemux . yes
    opus ................................. yes
    ffmpeg ............................... yes
    libvpx ............................... yes
    snappy ............................... yes
    libsrtp .............................. no

Maybe upstream is already (solely) supporting libsrtp2.

Please change or remove the build dependency.

Thanks,
Bernhard