Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/cmake/tests.cmake

 if (NOT EXISTS "${PROJECT_SOURCE_DIR}/../gmock/CMakeLists.txt")
   message(FATAL_ERROR "Cannot find gmock directory.")
 endif()
 
 option(protobuf_ABSOLUTE_TEST_PLUGIN_PATH
   "Using absolute test_plugin path in tests" ON)
 
 include_directories(
   ${protobuf_source_dir}/gmock
   ${protobuf_source_dir}/gmock/gtest
@@ skipping 34 matching lines @@
   google/protobuf/unittest_mset.proto
   google/protobuf/unittest_mset_wire_format.proto
   google/protobuf/unittest_no_arena.proto
   google/protobuf/unittest_no_arena_import.proto
   google/protobuf/unittest_no_field_presence.proto
   google/protobuf/unittest_no_generic_services.proto
   google/protobuf/unittest_optimize_for.proto
   google/protobuf/unittest_preserve_unknown_enum.proto
   google/protobuf/unittest_preserve_unknown_enum2.proto
   google/protobuf/unittest_proto3_arena.proto
+  google/protobuf/unittest_proto3_arena_lite.proto
+  google/protobuf/unittest_proto3_lite.proto
   google/protobuf/unittest_well_known_types.proto
   google/protobuf/util/internal/testdata/anys.proto
   google/protobuf/util/internal/testdata/books.proto
   google/protobuf/util/internal/testdata/default_value.proto
   google/protobuf/util/internal/testdata/default_value_test.proto
   google/protobuf/util/internal/testdata/field_mask.proto
   google/protobuf/util/internal/testdata/maps.proto
   google/protobuf/util/internal/testdata/oneofs.proto
   google/protobuf/util/internal/testdata/struct.proto
   google/protobuf/util/internal/testdata/timestamp_duration.proto
@@ skipping 44 matching lines @@
 )
 
 set(tests_files
   ${protobuf_source_dir}/src/google/protobuf/any_test.cc
   ${protobuf_source_dir}/src/google/protobuf/arena_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/arenastring_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/command_line_interface_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_bootstrap_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_plugin_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/cpp_unittest.cc
+  ${protobuf_source_dir}/src/google/protobuf/compiler/cpp/metadata_test.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/csharp/csharp_generator_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/importer_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/java/java_doc_comment_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/java/java_plugin_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/mock_code_generator.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/objectivec/objectivec_helpers_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/parser_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/python/python_plugin_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/ruby/ruby_generator_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/descriptor_database_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/descriptor_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/drop_unknown_fields_test.cc
   ${protobuf_source_dir}/src/google/protobuf/dynamic_message_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/extension_set_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/generated_message_reflection_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/io/coded_stream_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/io/printer_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/io/tokenizer_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/io/zero_copy_stream_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/map_field_test.cc
   ${protobuf_source_dir}/src/google/protobuf/map_test.cc
   ${protobuf_source_dir}/src/google/protobuf/message_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/no_field_presence_test.cc
   ${protobuf_source_dir}/src/google/protobuf/preserve_unknown_enum_test.cc
+  ${protobuf_source_dir}/src/google/protobuf/proto3_arena_lite_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/proto3_arena_unittest.cc
+  ${protobuf_source_dir}/src/google/protobuf/proto3_lite_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/reflection_ops_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/repeated_field_reflection_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/repeated_field_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/bytestream_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/common_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/int128_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/once_unittest.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/status_test.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/statusor_test.cc
   ${protobuf_source_dir}/src/google/protobuf/stubs/stringpiece_unittest.cc
@@ skipping 46 matching lines @@
 
 set(lite_arena_test_files
   ${protobuf_source_dir}/src/google/protobuf/lite_arena_unittest.cc
 )
 add_executable(lite-arena-test ${lite_arena_test_files} ${common_lite_test_files} ${lite_test_proto_files})
 target_link_libraries(lite-arena-test libprotobuf-lite gmock_main)
 
 add_custom_target(check
   COMMAND tests
   WORKING_DIRECTORY ${protobuf_source_dir})