Revert "Add DumpWithoutCrashing and crash keys to get more context"

blimp/engine/app/blimp_engine_crash_keys.cc

Index: blimp/engine/app/blimp_engine_crash_keys.cc
diff --git a/blimp/engine/app/blimp_engine_crash_keys.cc b/blimp/engine/app/blimp_engine_crash_keys.cc
index 39c68e3821f6ae7268f9b55e84e610c5c743ce44..bb2fcfdbc956a184c8fe1147611487ed26d0bdfa 100644
--- a/blimp/engine/app/blimp_engine_crash_keys.cc
+++ b/blimp/engine/app/blimp_engine_crash_keys.cc
@@ -65,11 +65,6 @@ size_t RegisterEngineCrashKeys() {
         crash_keys::kSmallSize},
       { "initrf_root_process_is_live", crash_keys::kSmallSize},
       { "initrf_root_proxy_is_live", crash_keys::kSmallSize},
-
-      // Temporary for https://crbug.com/600441
-      { "cookie_url", crash_keys::kSmallSize },
-      { "cookie_first_party", crash_keys::kSmallSize },
-      { "security_policy_origin_lock", crash_keys::kSmallSize },
     };
 
   return base::debug::InitCrashKeys(engine_keys, arraysize(engine_keys),