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The tarball that was imported is the 3.4.1 release: https://github.com/google/protobuf/releases/tag/v3.4.1 https://github.com/google/protobuf/releases/download/v3.4.1/protobuf-cpp-3.4.1.tar.gz This drops all of the customizations that are no longer needed, which includes a few issues that were fixed upstream: - r512.patch from bug 892856: https://searchfox.org/mozilla-central/rev/bab9dbe9c4ef71f71fb07e53b701fb2dfde277d9/toolkit/components/protobuf/r512.patchb04e5cba35/src/google/protobuf/io/zero_copy_stream_impl.cc (L43)- vs2013.patch, also from bug 892856: https://searchfox.org/mozilla-central/rev/bab9dbe9c4ef71f71fb07e53b701fb2dfde277d9/toolkit/components/protobuf/vs2013.patchb04e5cba35/src/google/protobuf/wire_format_lite_inl.h (L39)- sparc64 fixes in m-c-changes.patch from bug 1275204: https://hg.mozilla.org/integration/mozilla-inbound/rev/21d692e82582b04e5cba35/src/google/protobuf/stubs/platform_macros.h (L68)The LOGLEVEL_ERROR hack in m-c-changes.patch from bug1024774and bug 1320179 was replaced by a NOGDI define in moz.build as suggested by upstream: https://github.com/google/protobuf/pull/3745/files#r144915445 The other customizations that were dropped came from bug1024774. The patch for OpenBSD/32-bit will likely be fixed upstream in a future release: https://github.com/google/protobuf/pull/3747#issuecomment-336581244 Upgrading the protobuf library also required re-generating all of the existing .pb.h and pb.cc files (they are neither forward nor backward-compatible) and making adjustments to the build config to make it compile (and silence warnings). text_format.cc can now be compiled as part of UNIFIED_SOURCES. MozReview-Commit-ID: 7F2IqFmwQnN