Bug 286816 – [LibWebRTC] Fix Linux, GStreamer and unified build

• Component: WebRTC
• Status: RESOLVED FIXED

[Olivier Blin]

- libwebrtc: Remove test support files requiring gtest headers, this is not exposed in the CMake build
  (introduced in libwebrtc M132 update, 287962@main)
- LibWebRTCMediaEndpoint.cpp: Do not move rtcReport to avoid const qualified error (introduced in 287147@main)
- GStreamerVideoEncoderFactory.cpp: Use ASCIILiteral to avoid error from missing span(const gchar*) (from 279038@main)
- WebRTCMonitor.cpp: Include missing LibWebRTCNetwork.h for ref/deref methods

LibWebRTCMediaEndpoint.cpp errors:

/app/webkit/WebKitBuild/WPE/Debug/WTF/Headers/wtf/StdLibExtras.h: In instantiation of ‘constexpr typename std::remove_reference<_Arg>::type&& std::move(T&&) [with WTF::CheckMoveParameterTag <anonymous> = WTF::CheckMoveParameter; T = const webrtc::scoped_refptr<const webrtc::RTCStatsReport>&; typename remove_reference<_Arg>::type = const webrtc::scoped_refptr<const webrtc::RTCStatsReport>]’:
/app/webkit/Source/WebCore/Modules/mediastream/libwebrtc/LibWebRTCMediaEndpoint.cpp:282:140:   required from here
/app/webkit/WebKitBuild/WPE/Debug/WTF/Headers/wtf/StdLibExtras.h:817:51: error: static assertion failed: T is const qualified.
  817 |     static_assert(!is_const<NonRefQualifiedType>::value, "T is const qualified.");
      |                                                   ^~~~~
/app/webkit/WebKitBuild/WPE/Debug/WTF/Headers/wtf/StdLibExtras.h:817:51: note: ‘!(bool)std::integral_constant<bool, true>::value’ evaluates to false

[Olivier Blin]

Pull request: https://github.com/WebKit/WebKit/pull/39825

[EWS]

Committed 289776@main (80245993fa5a): <https://commits.webkit.org/289776@main>

Reviewed commits have been landed. Closing PR #39825 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/144145258>