UserAgent: Mozilla/5.0 (X11; Fedora; Linux ppc64le; rv:61.0) Gecko/20100101 Firefox/61.0

Steps to reproduce the problem:
1. Build chromium with GCC 8.1.1
2. 
3. 

What is the expected behavior?

What went wrong?
The changes made to quic_frame.h by commit 929883afba6805987954c3628a66ae5de9ea9a32 (https://chromium.googlesource.com/chromium/src/+/929883afba6805987954c3628a66ae5de9ea9a32%5E%21/#F50) break building on gcc.

The error is as follows:
[18/13118] CXX obj/components/autofill/core/browser/browser/password_requirements_spec_fetcher_impl.o
FAILED: obj/components/autofill/core/browser/browser/password_requirements_spec_fetcher_impl.o 
g++ -MMD -MF obj/components/autofill/core/browser/browser/password_requirements_spec_fetcher_impl.o.d -DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DCOMPONENT_BUILD -DCR_LIBCXX_REVISION=332543 -DCR_LIBCXXABI_REVISION=331450 -D_DEBUG -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DWTF_USE_DYNAMIC_ANNOTATIONS=1 -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32 -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26 -DWEBP_EXTERN=extern -DTOOLKIT_VIEWS=1 -DGL_GLEXT_PROTOTYPES -DUSE_GLX -DUSE_EGL -DVK_NO_PROTOTYPES -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DHAVE_PTHREAD -DPROTOBUF_USE_DLLS -DBORINGSSL_SHARED_LIBRARY -DSK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS -DSK_HAS_PNG_LIBRARY -DSK_HAS_WEBP_LIBRARY -DSK_HAS_JPEG_LIBRARY -DSK_VULKAN_HEADER=\"../../skia/config/SkVulkanConfig.h\" -DSK_VULKAN=1 -DSKIA_DLL -DGR_GL_IGNORE_ES3_MSAA=0 -DSKCMS_API=__attribute__\(\(visibility\(\"default\"\)\)\) -DSK_SUPPORT_GPU=1 -DSK_GPU_WORKAROUNDS_HEADER=\"gpu/config/gpu_driver_bug_workaround_autogen.h\" -DVK_NO_PROTOTYPES -DI18N_ADDRESS_VALIDATION_DATA_URL=\"https://chromium-i18n.appspot.com/ssl-aggregate-address/\" -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DUSE_CHROMIUM_ICU=1 -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE -DUCHAR_TYPE=uint16_t -DLEVELDB_PLATFORM_CHROMIUM=1 -DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0 -DWEBRTC_CHROMIUM_BUILD -DWEBRTC_POSIX -DWEBRTC_LINUX -DABSL_ALLOCATOR_NOTHROW=1 -DNO_MAIN_THREAD_WRAPPING -DI18N_PHONENUMBERS_USE_ICU_REGEXP=1 -DI18N_PHONENUMBERS_USE_ALTERNATE_FORMATS=1 -DI18N_PHONENUMBERS_NO_THREAD_SAFETY=1 -I../.. -Igen -I../../third_party/libwebp/src -I../../third_party/libyuv/include -I../../third_party/khronos -I../../gpu -I../../third_party/vulkan/include -I../../third_party/protobuf/src -Igen/protoc_out -I../../third_party/protobuf/src -I../../third_party/boringssl/src/include -I../../skia/config -I../../skia/ext -I../../third_party/skia/include/c -I../../third_party/skia/include/config -I../../third_party/skia/include/core -I../../third_party/skia/include/effects -I../../third_party/skia/include/encode -I../../third_party/skia/include/gpu -I../../third_party/skia/include/images -I../../third_party/skia/include/lazy -I../../third_party/skia/include/pathops -I../../third_party/skia/include/pdf -I../../third_party/skia/include/pipe -I../../third_party/skia/include/ports -I../../third_party/skia/include/utils -I../../third_party/vulkan/include -I../../third_party/skia/third_party/vulkanmemoryallocator -I../../third_party/skia/src/gpu -I../../third_party/skia/src/sksl -I../../third_party/skia/modules/skottie/include -I../../third_party/vulkan/include -I../../third_party/libaddressinput/src/cpp/include -I../../third_party/ced/src -I../../third_party/icu/source/common -I../../third_party/icu/source/i18n -I../../third_party/leveldatabase -I../../third_party/leveldatabase/src -I../../third_party/leveldatabase/src/include -I../../third_party/webrtc_overrides -I../../third_party/webrtc -I../../third_party/abseil-cpp -I../../third_party/cacheinvalidation/overrides -I../../third_party/cacheinvalidation/src -I../../third_party/libphonenumber/dist/cpp/src -Igen/third_party/libphonenumber -I../../third_party/re2/src -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -funwind-tables -fPIC -pipe -pthread -m64 -Wall -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -fno-delete-null-pointer-checks -Wno-comments -Wno-missing-field-initializers -Wno-unused-parameter -O0 -fno-omit-frame-pointer -g2 -fno-builtin-abs -fvisibility=hidden -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/nss3 -I/usr/include/nspr4 -std=gnu++14 -Wno-narrowing -fno-exceptions -fno-rtti -nostdinc++ -isystem../../buildtools/third_party/libc++/trunk/include -isystem../../buildtools/third_party/libc++abi/trunk/include -fvisibility-inlines-hidden -c ../../components/autofill/core/browser/password_requirements_spec_fetcher_impl.cc -o obj/components/autofill/core/browser/browser/password_requirements_spec_fetcher_impl.o
In file included from ../../net/third_party/quic/core/quic_packets.h:18,
                 from ../../net/base/net_error_details.h:10,
                 from ../../net/url_request/url_request.h:27,
                 from ../../services/network/public/cpp/resource_request.h:17,
                 from ../../components/autofill/core/browser/password_requirements_spec_fetcher_impl.cc:19:
../../net/third_party/quic/core/frames/quic_frame.h:73:7: error: member ‘quic::QuicFrame::<unnamed union>::<unnamed struct>::<unnamed union> quic::QuicFrame::<unnamed union>::<unnamed struct>::<anonymous>’ with constructor not allowed in anonymous aggregate
       union {

Reverting the file to its state in commit 7b4f22bd25461cb32236c07699b029c7411ba494 allows the build to continue.

Did this work before? N/A 

Chrome version: 70.0.3538.9  Channel: dev
OS Version: Fedora
Flash Version: