Fix the serialization for values in std::unique_ptrs.

headless/public/internal/value_conversions.h

 // Copyright 2016 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.
 
 #ifndef HEADLESS_PUBLIC_INTERNAL_VALUE_CONVERSIONS_H_
 #define HEADLESS_PUBLIC_INTERNAL_VALUE_CONVERSIONS_H_
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
@@ skipping 49 matching lines @@
                                          const std::vector<T>*) {
   std::unique_ptr<base::ListValue> result(new base::ListValue());
   for (const auto& it : vector)
     result->Append(ToValue(it));
   return std::move(result);
 }
 
 template <typename T>
 std::unique_ptr<base::Value> ToValueImpl(const std::unique_ptr<T>& value,
                                          std::unique_ptr<T>*) {
-  return ToValue(value.get());
+  return ToValue(*value);
 }
 
 // FromValue specializations for basic types.
 template <>
 struct FromValue<bool> {
   static bool Parse(const base::Value& value, ErrorReporter* errors) {
     bool result = false;
     if (!value.GetAsBoolean(&result))
       errors->AddError("boolean value expected");
     return result;
@@ skipping 73 matching lines @@
       result.push_back(FromValue<T>::Parse(*item, errors));
     errors->Pop();
     return result;
   }
 };
 
 }  // namespace internal
 }  // namespace headless
 
 #endif  // HEADLESS_PUBLIC_INTERNAL_VALUE_CONVERSIONS_H_