Add git dependencies to git submodules

This CL adds support for git submodules. Users are still expected to
use gclient sync. See announcement for more details:
https://groups.google.com/a/chromium.org/g/chromium-dev/c/LDFlTtY8k3A

Bug: 1409737
Change-Id: I2c277b343d7242113f3cc74a465716288afdf7fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4671471
Reviewed-by: John Abd-El-Malek <[email protected]>
Owners-Override: John Abd-El-Malek <[email protected]>
Reviewed-by: Erik Staab <[email protected]>
Commit-Queue: Josip Sokcevic <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1187337}

DEPS

@@ -32,6 +32,10 @@
 # which is a bit incomplete but the best documentation we have at the
 # moment.
 
+# We expect all git dependencies specified in this file to be in sync with git
+# submodules (gitlinks).
+git_dependencies = 'SYNC'
+
 gclient_gn_args_file = 'src/build/config/gclient_args.gni'
 gclient_gn_args = [
   'build_with_chromium',
@@ -526,6 +530,10 @@ vars = {
   # https://chrome-infra-packages.appspot.com/p/infra/3pp/tools/ninja
   # This has to stay in sync with the version in src/third_party/ninja/README.chromium.
   'ninja_version': 'version:[email protected]',
+
+  # 'magic' variable to tell depot_tools that git submodules should be accepted
+  # but parity with DEPS file is expected.
+  'SUBMODULE_MIGRATION': 'True',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.

OWNERS

@@ -34,3 +34,236 @@ per-file PRESUBMIT*[email protected]
 per-file PRESUBMIT*[email protected]  # For .pydeps changes
 per-file README.md=*
 per-file WATCHLISTS=*
+
+# git submodules
+per-file third_party/clang-format/script=*
+per-file chrome/browser/resources/preinstalled_web_apps/internal=*
+per-file chrome/installer/mac/third_party/xz/xz=*
+per-file third_party/libc++/src=*
+per-file third_party/libc++abi/src=*
+per-file third_party/libunwind/src=*
+per-file chrome/test/data/autofill/captured_sites/artifacts=*
+per-file chrome/test/data/password/captured_sites/artifacts=*
+per-file chrome/test/data/perf/canvas_bench=*
+per-file chrome/test/data/perf/frame_rate/content=*
+per-file chrome/test/data/xr/webvr_info=*
+per-file clank=*
+per-file docs/website=*
+per-file ios/third_party/earl_grey2/src=*
+per-file ios/third_party/edo/src=*
+per-file ios/third_party/gtx/src=*
+per-file ios/third_party/lottie/src=*
+per-file ios/third_party/material_components_ios/src=*
+per-file ios/third_party/material_font_disk_loader_ios/src=*
+per-file ios/third_party/material_internationalization_ios/src=*
+per-file ios/third_party/material_roboto_font_loader_ios/src=*
+per-file ios/third_party/material_sprited_animation_view_ios/src=*
+per-file ios/third_party/material_text_accessibility_ios/src=*
+per-file ios/third_party/motion_interchange_objc/src=*
+per-file ios/third_party/motion_animator_objc/src=*
+per-file ios/third_party/motion_transitioning_objc/src=*
+per-file ios/third_party/ochamcrest/src=*
+per-file ios/third_party/webkit/src=*
+per-file media/cdm/api=*
+per-file native_client=*
+per-file net/third_party/quiche/src=*
+per-file third_party/android_protobuf/src=*
+per-file third_party/androidx_javascriptengine/src=*
+per-file third_party/angle=*
+per-file third_party/anonymous_tokens/src=*
+per-file third_party/content_analysis_sdk/src=*
+per-file third_party/dav1d/libdav1d=*
+per-file third_party/dawn=*
+per-file third_party/highway/src=*
+per-file third_party/apache-portable-runtime/src=*
+per-file third_party/barhopper=*
+per-file third_party/google_benchmark/src=*
+per-file third_party/boringssl/src=*
+per-file third_party/breakpad/breakpad=*
+per-file third_party/cast_core/public/src=*
+per-file third_party/catapult=*
+per-file third_party/ced/src=*
+per-file third_party/chromium-variations=*
+per-file third_party/chromevox/third_party/sre/src=*
+per-file third_party/chromite=*
+per-file third_party/cld_3/src=*
+per-file third_party/colorama/src=*
+per-file third_party/cpu_features/src=*
+per-file third_party/cpuinfo/src=*
+per-file third_party/crc32c/src=*
+per-file third_party/cros_system_api=*
+per-file third_party/crossbench=*
+per-file third_party/crubit/src=*
+per-file third_party/depot_tools=*
+per-file third_party/devtools-frontend/src=*
+per-file third_party/devtools-frontend-internal=*
+per-file third_party/dom_distiller_js/dist=*
+per-file third_party/eigen3/src=*
+per-file third_party/emoji-metadata/src=*
+per-file third_party/farmhash/src=*
+per-file third_party/ffmpeg=*
+per-file third_party/flac=*
+per-file third_party/flatbuffers/src=*
+per-file third_party/fontconfig/src=*
+per-file third_party/fp16/src=*
+per-file third_party/gemmlowp/src=*
+per-file third_party/grpc/src=*
+per-file third_party/freetype/src=*
+per-file third_party/freetype-testing/src=*
+per-file third_party/fxdiv/src=*
+per-file third_party/harfbuzz-ng/src=*
+per-file third_party/emoji-segmenter/src=*
+per-file third_party/ots/src=*
+per-file third_party/libgav1/src=*
+per-file third_party/google_toolbox_for_mac/src=*
+per-file third_party/googletest/src=*
+per-file third_party/gnu_binutils=*
+per-file third_party/gperf=*
+per-file third_party/gvr-android-sdk/src=*
+per-file third_party/cardboard/src=*
+per-file third_party/arcore-android-sdk/src=*
+per-file third_party/hunspell_dictionaries=*
+per-file third_party/icu=*
+per-file third_party/javalang/src=*
+per-file third_party/jsoncpp/source=*
+per-file third_party/junit/src=*
+per-file third_party/leveldatabase/src=*
+per-file third_party/libFuzzer/src=*
+per-file third_party/fuzztest/src=*
+per-file third_party/libaddressinput/src=*
+per-file third_party/libaom/source/libaom=*
+per-file third_party/libavif/src=*
+per-file third_party/libavifinfo/src=*
+per-file third_party/nearby/src=*
+per-file third_party/beto-core/src=*
+per-file third_party/securemessage/src=*
+per-file third_party/ukey2/src=*
+per-file third_party/cros-components/src=*
+per-file third_party/libdrm/src=*
+per-file third_party/expat/src=*
+per-file third_party/libipp/libipp=*
+per-file third_party/libjpeg_turbo=*
+per-file third_party/liblouis/src=*
+per-file third_party/libphonenumber/dist=*
+per-file third_party/libprotobuf-mutator/src=*
+per-file third_party/libsrtp=*
+per-file third_party/libsync/src=*
+per-file third_party/libunwindstack=*
+per-file third_party/libvpx/source/libvpx=*
+per-file third_party/libwebm/source=*
+per-file third_party/libwebp/src=*
+per-file third_party/libyuv=*
+per-file third_party/lighttpd=*
+per-file third_party/lss=*
+per-file third_party/material_color_utilities/src=*
+per-file third_party/material_design_icons/src=*
+per-file third_party/mingw-w64/mingw/bin=*
+per-file third_party/minigbm/src=*
+per-file third_party/nacl_sdk_binaries=*
+per-file third_party/nasm=*
+per-file third_party/neon_2_sse/src=*
+per-file third_party/netty-tcnative/src=*
+per-file third_party/netty4/src=*
+per-file third_party/openh264/src=*
+per-file third_party/openscreen/src=*
+per-file third_party/openxr/src=*
+per-file third_party/pdfium=*
+per-file third_party/perfetto=*
+per-file third_party/perl=*
+per-file third_party/pthreadpool/src=*
+per-file third_party/pyelftools=*
+per-file third_party/quic_trace/src=*
+per-file third_party/pywebsocket3/src=*
+per-file third_party/re2/src=*
+per-file third_party/requests/src=*
+per-file third_party/ruy/src=*
+per-file third_party/skia=*
+per-file third_party/smhasher/src=*
+per-file third_party/snappy/src=*
+per-file third_party/sqlite/src=*
+per-file third_party/swiftshader=*
+per-file third_party/text-fragments-polyfill/src=*
+per-file third_party/tflite/src=*
+per-file third_party/vulkan-deps=*
+per-file third_party/vulkan_memory_allocator=*
+per-file third_party/wayland/src=*
+per-file third_party/wayland-protocols/src=*
+per-file third_party/wayland-protocols/kde=*
+per-file third_party/wayland-protocols/gtk=*
+per-file third_party/webdriver/pylib=*
+per-file third_party/webgl/src=*
+per-file third_party/webgpu-cts/src=*
+per-file third_party/webrtc=*
+per-file third_party/wuffs/src=*
+per-file third_party/weston/src=*
+per-file third_party/wlcs/src=*
+per-file third_party/xdg-utils=*
+per-file third_party/xnnpack/src=*
+per-file tools/page_cycler/acid3=*
+per-file third_party/zstd/src=*
+per-file v8=*
+per-file internal=*
+per-file third_party/android_prebuilts/build_tools=*
+per-file chromeos/assistant/internal=*
+per-file build/fuchsia/internal=*
+per-file chrome/app/theme/default_100_percent/google_chrome=*
+per-file chrome/app/theme/default_200_percent/google_chrome=*
+per-file chrome/app/theme/google_chrome=*
+per-file chrome/browser/enterprise/connectors/internal=*
+per-file chrome/browser/google/linkdoctor_internal=*
+per-file chrome/browser/internal=*
+per-file chrome/browser/media/engagement_internal=*
+per-file chrome/browser/resources/chromeos/quickoffice=*
+per-file chrome/browser/resources/settings_internal=*
+per-file chrome/browser/spellchecker/internal=*
+per-file chrome/chrome_cleaner/internal=*
+per-file chrome/installer/mac/internal=*
+per-file chrome/test/data/firefox3_profile/searchplugins=*
+per-file chrome/test/data/firefox3_searchplugins=*
+per-file chrome/test/data/gpu/vt=*
+per-file chrome/test/data/perf/frame_rate/private=*
+per-file chrome/test/data/perf/private=*
+per-file chrome/test/data/pdf_private=*
+per-file chrome/test/media_router/internal=*
+per-file chrome/test/python_tests=*
+per-file chrome/tools/memory=*
+per-file chrome/services/speech/internal=*
+per-file components/autofill/core/browser/form_parsing/internal_resources=*
+per-file components/crash/core/app/internal=*
+per-file components/metrics/internal=*
+per-file components/ntp_tiles/resources/internal=*
+per-file components/optimization_guide/internal=*
+per-file components/resources/default_100_percent/google_chrome=*
+per-file components/resources/default_200_percent/google_chrome=*
+per-file components/resources/default_300_percent/google_chrome=*
+per-file components/site_isolation/internal=*
+per-file components/vector_icons/google_chrome=*
+per-file content/test/data/plugin=*
+per-file google_apis/internal=*
+per-file ios_internal=*
+per-file remoting/android/internal=*
+per-file remoting/host/installer/linux/internal=*
+per-file remoting/internal=*
+per-file remoting/test/internal=*
+per-file remoting/tools/internal=*
+per-file remoting/webapp/app_remoting/internal=*
+per-file signing_keys=*
+per-file skia/tools/clusterfuzz-data=*
+per-file third_party/amd=*
+per-file third_party/android_tools_internal=*
+per-file third_party/gles2_conform=*
+per-file third_party/googlemac=*
+per-file third_party/khronos_glcts=*
+per-file third_party/widevine/cdm/chromeos=*
+per-file third_party/widevine/cdm/linux=*
+per-file third_party/widevine/cdm/mac=*
+per-file third_party/widevine/cdm/win=*
+per-file third_party/widevine/scripts=*
+per-file third_party/widevine/test/license_server=*
+per-file third_party/wix=*
+per-file tools/perf/data=*
+per-file ui/file_manager/internal=*
+per-file ui/webui/internal=*
+per-file webkit/data/bmp_decoder=*
+per-file webkit/data/ico_decoder=*
+per-file webkit/data/test_shell/plugins=*