Temporarily CHECK use after free in Value

base/trace_event/trace_event_argument.cc

Index: base/trace_event/trace_event_argument.cc
diff --git a/base/trace_event/trace_event_argument.cc b/base/trace_event/trace_event_argument.cc
index db702b6231e5249c9526d27ac439450c732e39a6..f6cb8c8e65cfe6ffb2ca150032e941996d6eeefe 100644
--- a/base/trace_event/trace_event_argument.cc
+++ b/base/trace_event/trace_event_argument.cc
@@ -292,6 +292,11 @@ void TracedValue::SetBaseValueWithCopiedName(base::StringPiece name,
         AppendBaseValue(*base_value);
       EndArray();
     } break;
+
+    case base::Value::Type::DELETED:
+      // TODO(crbug.com/697817): This means |value| is used after free.
+      CHECK(false);
+      return;
   }
 }
 
@@ -346,6 +351,11 @@ void TracedValue::AppendBaseValue(const base::Value& value) {
         AppendBaseValue(*base_value);
       EndArray();
     } break;
+
+    case base::Value::Type::DELETED:
+      // TODO(crbug.com/697817): This means |value| is used after free.
+      CHECK(false);
+      return;
   }
 }