Temporarily CHECK use after free in Value

components/policy/core/common/registry_dict.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/policy/core/common/registry_dict.h"
 
 #include <utility>
 
 #include "base/json/json_reader.h"
 #include "base/memory/ptr_util.h"
@@ skipping 120 matching lines @@
             base::JSONReader::Read(string_value);
         if (result && result->IsType(schema.type()))
           return result;
       }
       break;
     }
     case base::Value::Type::STRING:
     case base::Value::Type::BINARY:
       // No conversion possible.
       break;
+
+    case base::Value::Type::DELETED:
+      // TODO(crbug.com/697817): This means a use-after-free.
+      CHECK(false);
+      break;
   }
 
   LOG(WARNING) << "Failed to convert " << value.GetType()
                << " to " << schema.type();
   return nullptr;
 }
 #endif  // #if defined(OS_WIN)
 
 }  // namespace
 
@@ skipping 201 matching lines @@
       return std::move(result);
     }
     default:
       LOG(WARNING) << "Can't convert registry key to schema type " << type;
   }
 
   return nullptr;
 }
 #endif  // #if defined(OS_WIN)
 }  // namespace policy