Patch to try dump-on-DCHECK.

build/config/BUILD.gn

Index: build/config/BUILD.gn
diff --git a/build/config/BUILD.gn b/build/config/BUILD.gn
index 907dff696244ee11687f243de5f0ae66c5836ae4..1fa0d80fdd6301522c868a52a9ccd869c80447c5 100644
--- a/build/config/BUILD.gn
+++ b/build/config/BUILD.gn
@@ -87,6 +87,14 @@ config("feature_flags") {
   if (use_browser_spellchecker) {
     defines += [ "USE_BROWSER_SPELLCHECKER=1" ]
   }
+
+  # In Windows official builds, this will cause DCHECKs to
+  # dump-without-crashing. See crbug.com/596231.
+  if (is_official_build && is_win) {
+    dcheck_always_on = true
+    defines += [ "DCHECK_IS_DUMP_WITHOUT_CRASH=1" ]
+  }
+
   if (dcheck_always_on) {
     defines += [ "DCHECK_ALWAYS_ON=1" ]
   }