Componentize zombies to silence ObjC runtime errors in component builds

components/crash/core/common/objc_zombie.h

Index: components/crash/core/common/objc_zombie.h
diff --git a/components/crash/core/common/objc_zombie.h b/components/crash/core/common/objc_zombie.h
index c023f1c30e14474801dd58f299eaf9c1d2f2ac85..bfcb8e73025c7d6628e094098ff380c5f9b679e8 100644
--- a/components/crash/core/common/objc_zombie.h
+++ b/components/crash/core/common/objc_zombie.h
@@ -8,6 +8,7 @@
 #include <stddef.h>
 
 #include "build/build_config.h"
+#include "components/crash/crash_export.h"
 
 // You should think twice every single time you use anything from this
 // namespace.
@@ -26,10 +27,10 @@ namespace ObjcEvilDoers {
 // |zombieCount| controls how many zombies to store before freeing the
 // oldest.  Set to 0 to free objects immediately after making them
 // zombies.
-bool ZombieEnable(bool zombieAllObjects, size_t zombieCount);
+bool CRASH_EXPORT ZombieEnable(bool zombieAllObjects, size_t zombieCount);
 
 // Disable zombies.
-void ZombieDisable();
+void CRASH_EXPORT ZombieDisable();
 
 }  // namespace ObjcEvilDoers