chore: fix build

build/args/all.gn

@@ -75,3 +75,6 @@ enable_linux_installer = false
 
 # Disable "Save to Drive" feature in PDF viewer
 enable_pdf_save_to_drive = false
+
+# Export zlib symbols for native modules
+zlib_symbols_visible = true

patches/chromium/.patches

@@ -53,7 +53,6 @@ worker_feat_add_hook_to_notify_script_ready.patch
 chore_provide_iswebcontentscreationoverridden_with_full_params.patch
 fix_properly_honor_printing_page_ranges.patch
 export_gin_v8platform_pageallocator_for_usage_outside_of_the_gin.patch
-fix_export_zlib_symbols.patch
 web_contents.patch
 webview_fullscreen.patch
 extend_apply_webpreferences.patch
@@ -142,3 +141,4 @@ expose_referrerscriptinfo_hostdefinedoptionsindex.patch
 chore_disable_protocol_handler_dcheck.patch
 fix_check_for_file_existence_before_setting_mtime.patch
 fix_linux_tray_id.patch
+zlib_build_fix_zlib_symbols_visible_on_windows.patch

patches/chromium/fix_export_zlib_symbols.patch

@@ -1,22 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Shelley Vohr <shelley.vohr@gmail.com>
-Date: Mon, 1 Jun 2020 15:30:47 -0800
-Subject: fix: export zlib symbols
-
-This patch sets ZLIB_DLL so that we properly export zlib symbols.
-
-diff --git a/third_party/zlib/BUILD.gn b/third_party/zlib/BUILD.gn
-index afd3e8cc0f38e95b3b04835b46bd1197a63b4ed1..652fa32d49de9f0c73777c0d4d99421f52e16b38 100644
---- a/third_party/zlib/BUILD.gn
-+++ b/third_party/zlib/BUILD.gn
-@@ -333,6 +333,10 @@ component("zlib") {
-   defines = []
-   deps = []
- 
-+  if (is_win) {
-+    defines += [ "ZLIB_DLL" ]
-+  }
-+
-   if (!use_x86_x64_optimizations && !use_arm_neon_optimizations) {
-     # Apparently android_cronet bot builds with NEON disabled and
-     # we also should disable optimizations for iOS@x86 (a.k.a. simulator).

patches/chromium/zlib_build_fix_zlib_symbols_visible_on_windows.patch

@@ -0,0 +1,33 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Deepak Mohan <hop2deep@gmail.com>
+Date: Fri, 5 Dec 2025 00:15:16 +0900
+Subject: [zlib][build] Fix zlib_symbols_visible on windows
+
+Followup to https://crrev.com/c/4322978, addresses
+the following error when attempting to build with
+zlib_symbols_visible=true on windows platform.
+
+```
+ERROR at //third_party/zlib/BUILD.gn:365:18: Item not found
+    configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
+                 ^--------------------------------------------
+You were trying to remove "//build/config/gcc:symbol_visibility_hidden"
+from the list but it wasn't there.
+```
+
+Bug: 42203738
+Change-Id: I51200141447386be14c0e6874548351f8ed3ed4f
+
+diff --git a/third_party/zlib/BUILD.gn b/third_party/zlib/BUILD.gn
+index afd3e8cc0f38e95b3b04835b46bd1197a63b4ed1..ae176ae97702bac31657e57a85e571d22e7eda22 100644
+--- a/third_party/zlib/BUILD.gn
++++ b/third_party/zlib/BUILD.gn
+@@ -367,7 +367,7 @@ component("zlib") {
+   configs -= [ "//build/config/compiler:chromium_code" ]
+   configs += [ "//build/config/compiler:no_chromium_code" ]
+ 
+-  if (zlib_symbols_visible) {
++  if (is_posix && zlib_symbols_visible) {
+     configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
+     configs += [ "//build/config/gcc:symbol_visibility_default" ]
+   }