chromium: Drop patches that are specific to clang < 17 (#801)

Given that we have decided not to support kirkstone until it uses a more
recent version of clang, we can now drop all patches that are only
needed to fix errors with clang < 17 (as nanbield uses clang 17).

This also updates LAYERSERIES_COMPAT, dropping kirkstone, as well as the
EOL'd mickledore and langdale.

Signed-off-by: Max Ihlenfeldt <[email protected]>

Author: MaxIhlenfeldt

meta-chromium/conf/layer.conf

@@ -9,6 +9,6 @@ BBFILE_PATTERN_chromium-browser-layer := "^${LAYERDIR}/"
 BBFILE_PRIORITY_chromium-browser-layer = "7"
 
 LAYERVERSION_chromium-browser-layer = "1"
-LAYERSERIES_COMPAT_chromium-browser-layer = "kirkstone langdale mickledore nanbield scarthgap"
+LAYERSERIES_COMPAT_chromium-browser-layer = "nanbield scarthgap"
 
 LAYERDEPENDS_chromium-browser-layer = "clang-layer core openembedded-layer"

meta-chromium/recipes-browser/chromium/chromium-gn.inc

@@ -27,20 +27,11 @@ SRC_URI += "\
     file://0003-wrapper-extra-flags.patch \
     file://0004-Delete-compiler-options-not-available-in-release-ver.patch \
     file://0005-avoid-link-latomic-failure-on-CentOS-8-host.patch \
-    file://0006-Revert-__attribute__-and-alignas-changes.patch \
-    file://0007-Add-missing-typename-s.patch \
-    file://0008-Don-t-pass-unknown-LLVM-options.patch \
-    file://0009-Avoid-capturing-structured-bindings.patch \
-    file://0010-Revert-Reland-Reland-mte-refactor-the-tagging-functi.patch \
-    file://0011-Avoid-parenthesized-initialization-of-aggregates.patch \
-    file://0012-Fix-constexpr-variable-cannot-have-non-literal-type-.patch \
-    file://0013-Fix-undefined-symbol-PaintOpWriter-SerializedSize-un.patch \
-    file://0014-Fix-implicitly-deleted-default-constructor-build-err.patch \
-    file://0015-Don-t-delete-CrashKeyWithName-dtor.patch \
-    file://0016-Use-base-ranges-instead-of-std-ranges.patch \
-    file://0017-Use-the-correct-path-to-libclang_rt.builtins.a.patch \
-    file://0018-Adjust-the-Rust-build-to-our-needs.patch \
-    file://0019-Don-t-require-profiler_builtins.rlib.patch \
+    file://0006-Don-t-pass-unknown-LLVM-options.patch \
+    file://0007-Fix-constexpr-variable-must-be-initialized-by-a-cons.patch \
+    file://0008-Use-the-correct-path-to-libclang_rt.builtins.a.patch \
+    file://0009-Adjust-the-Rust-build-to-our-needs.patch \
+    file://0010-Don-t-require-profiler_builtins.rlib.patch \
 "
 # ARM/AArch64-specific patches.
 SRC_URI:append:arm = "\

meta-chromium/recipes-browser/chromium/files/0008-Don-t-pass-unknown-LLVM-options.patch renamed to meta-chromium/recipes-browser/chromium/files/0006-Don-t-pass-unknown-LLVM-options.patch

@@ -5,7 +5,6 @@ Subject: [PATCH] Don't pass unknown LLVM options
 
 Because we compile and link with an older LLVM version than upstream, we
 need to drop the following LLVM options that aren't available yet:
-* disable-auto-upgrade-debug-info
 * split-threshold-for-reg-with-hint
 
 Trying to pass them anyways will lead to an "Unknown command line
@@ -14,8 +13,8 @@ argument" error.
 Upstream-Status: Inappropriate [specific to older versions of LLVM]
 Signed-off-by: Max Ihlenfeldt <[email protected]>
 ---
- build/config/compiler/BUILD.gn | 25 -------------------------
- 1 file changed, 25 deletions(-)
+ build/config/compiler/BUILD.gn | 18 ------------------
+ 1 file changed, 18 deletions(-)
 
 diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
 index 93c9bfc..94e40fa 100644
@@ -46,17 +45,3 @@ index 93c9bfc..94e40fa 100644
      # TODO(crbug.com/1235145): Investigate why/if this should be needed.
      if (is_win) {
        cflags += [ "/clang:-ffp-contract=off" ]
-@@ -800,13 +782,6 @@ config("compiler") {
-       if (is_apple) {
-         ldflags += [ "-Wcrl,object_path_lto" ]
-       }
--      if (!is_chromeos) {
--        # TODO(https://crbug.com/972449): turn on for ChromeOS when that
--        # toolchain has this flag.
--        # We only use one version of LLVM within a build so there's no need to
--        # upgrade debug info, which can be expensive since it runs the verifier.
--        ldflags += [ "-Wl,-mllvm,-disable-auto-upgrade-debug-info" ]
--      }
-     }
-
-     # TODO(https://crbug.com/1211155): investigate why this isn't effective on