* Upstream beta channel update: 77.0.3865.19
* debian/patches/add-missing-cstddef-include.patch: refreshed
* debian/patches/chromium_useragent.patch: refreshed
* debian/patches/configuration-directory.patch: refreshed
* debian/patches/enable-chromecast-by-default.patch: refreshed
* debian/patches/fix-extra-arflags.patch: refreshed
* debian/patches/search-credit.patch: refreshed
* debian/patches/set-rpath-on-chromium-executables.patch: refreshed
* debian/patches/title-bar-default-system.patch-v35: refreshed
* debian/patches/upstream-fix-blink-build-iterators.patch: removed, no longer needed
* debian/patches/widevine-enable-version-string.patch: refreshed