Fix conditional for /OPT:ICF so Debug non-component build does not warn.

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index b5231b1537587a51bdcf520f1adb0afc7eb91cda..76ac51591829829963cd9ba7e0c74913118d5a39 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -1266,9 +1266,14 @@ if (is_win) {
     ]
   }
   common_optimize_on_ldflags = []
-  if (!is_component_build) {
+
+  # /OPT:ICF is not desirable in Debug builds, since code-folding can result in
+  # misleading symbols in stack traces. It is also incompatible with
+  # incremental linking, which we enable for both Debug and component builds.
+  if (!is_debug && !is_component_build) {
     common_optimize_on_ldflags += [ "/OPT:ICF" ]  # Redundant COMDAT folding.
   }
+
   if (is_official_build) {
     common_optimize_on_ldflags += [ "/OPT:REF" ]  # Remove unreferenced data.
     if (!use_lld) {