ci: disable use-thin-lto on Mac only (#33115)

* build: remove use_thin_lto = false

* ci: enabling if things get really bad (all darwin)

* build: lol don't enable that

* build: add patch to disable thin lto for mac

build/args/all.gn

@@ -35,9 +35,6 @@ enable_pseudolocales = false
 
 is_cfi = false
 
-# This consumes a bit too much disk space on macOS
-use_thin_lto = false
-
 # Make application name configurable at runtime for cookie crypto
 allow_runtime_configurable_key_storage = true
 

patches/chromium/.patches

@@ -112,3 +112,4 @@ feat_add_data_transfer_to_requestsingleinstancelock.patch
 fix_crash_when_saving_edited_pdf_files.patch
 port_autofill_colors_to_the_color_pipeline.patch
 build_disable_partition_alloc_on_mac.patch
+build_disable_thin_lto_on_mac.patch

patches/chromium/build_disable_thin_lto_on_mac.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: VerteDinde <[email protected]>
+Date: Tue, 1 Mar 2022 11:31:59 -0800
+Subject: build: disable thin lto on mac
+
+Ths build disables thin lto for mac, in order to preserve
+disk space on mac without breaking win-ia32.
+The patch can be removed when we have more disk space on CircleCI
+
+diff --git a/build/config/compiler/compiler.gni b/build/config/compiler/compiler.gni
+index 9d25c10587c7ab4e2053f8f69aef3f135ef8e9f9..8d8b8d13c62da1fdd051019c8b726de7d1783113 100644
+--- a/build/config/compiler/compiler.gni
++++ b/build/config/compiler/compiler.gni
+@@ -74,7 +74,7 @@ declare_args() {
+   use_thin_lto =
+       is_cfi ||
+       (is_clang && is_official_build && chrome_pgo_phase != 1 &&
+-       (is_linux || is_win || is_mac ||
++       (is_linux || is_win ||
+         (is_android && target_os != "chromeos") ||
+         ((is_chromeos_ash || is_chromeos_lacros) && is_chromeos_device)))
+