Add the new, required Wayland AC source files.
Add support for the Wayland EGL platform in ANGLE's eglplatform.h header.
Don't unconditionally define WTF_PLATFORM_X11 and MOZ_X11.
Search for the Wayland dependency through pkg-config.
Add build rules for generating Wayland protocol extension sources.
Use WaylandCompositorEGL instead of WaylandCompositorDispmanX.
Don't unnecessarily include GLES2 headers in WaylandCompositorEGL.h.
Exit with a failure if building PluginProcessMainUnix with disabled X11 plugin architecture.
Enhance GLContext, GLContextEGL to properly support Wayland AC.
Enhance GTK's LayerTreeHost to properly support Wayland displays.