Use std::unique_ptr<base::Value> in V8ValueConverter.

content/child/v8_value_converter_impl.h

 // Copyright (c) 2012 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 CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_
 #define CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_
 
 #include <map>
 
 #include "base/compiler_specific.h"
@@ skipping 16 matching lines @@
 
   // V8ValueConverter implementation.
   void SetDateAllowed(bool val) override;
   void SetRegExpAllowed(bool val) override;
   void SetFunctionAllowed(bool val) override;
   void SetStripNullFromObjects(bool val) override;
   void SetStrategy(Strategy* strategy) override;
   v8::Local<v8::Value> ToV8Value(
       const base::Value* value,
       v8::Local<v8::Context> context) const override;
-  base::Value* FromV8Value(v8::Local<v8::Value> value,
-                           v8::Local<v8::Context> context) const override;
+  std::unique_ptr<base::Value> FromV8Value(
+      v8::Local<v8::Value> value,
+      v8::Local<v8::Context> context) const override;
 
  private:
   friend class ScopedAvoidIdentityHashForTesting;
 
   class FromV8ValueState;
   class ScopedUniquenessGuard;
 
   v8::Local<v8::Value> ToV8ValueImpl(v8::Isolate* isolate,
                                      v8::Local<v8::Object> creation_context,
                                      const base::Value* value) const;
   v8::Local<v8::Value> ToV8Array(v8::Isolate* isolate,
                                   v8::Local<v8::Object> creation_context,
                                   const base::ListValue* list) const;
   v8::Local<v8::Value> ToV8Object(
       v8::Isolate* isolate,
       v8::Local<v8::Object> creation_context,
       const base::DictionaryValue* dictionary) const;
   v8::Local<v8::Value> ToArrayBuffer(v8::Isolate* isolate,
                                       v8::Local<v8::Object> creation_context,
                                       const base::BinaryValue* value) const;
 
-  base::Value* FromV8ValueImpl(FromV8ValueState* state,
-                               v8::Local<v8::Value> value,
-                               v8::Isolate* isolate) const;
-  base::Value* FromV8Array(v8::Local<v8::Array> array,
-                           FromV8ValueState* state,
-                           v8::Isolate* isolate) const;
+  std::unique_ptr<base::Value> FromV8ValueImpl(FromV8ValueState* state,
+                                               v8::Local<v8::Value> value,
+                                               v8::Isolate* isolate) const;
+  std::unique_ptr<base::Value> FromV8Array(v8::Local<v8::Array> array,
+                                           FromV8ValueState* state,
+                                           v8::Isolate* isolate) const;
 
   // This will convert objects of type ArrayBuffer or any of the
   // ArrayBufferView subclasses.
-  base::Value* FromV8ArrayBuffer(v8::Local<v8::Object> val,
-                                 v8::Isolate* isolate) const;
+  std::unique_ptr<base::Value> FromV8ArrayBuffer(v8::Local<v8::Object> val,
+                                                 v8::Isolate* isolate) const;
 
-  base::Value* FromV8Object(v8::Local<v8::Object> object,
-                            FromV8ValueState* state,
-                            v8::Isolate* isolate) const;
+  std::unique_ptr<base::Value> FromV8Object(v8::Local<v8::Object> object,
+                                            FromV8ValueState* state,
+                                            v8::Isolate* isolate) const;
 
   // If true, we will convert Date JavaScript objects to doubles.
   bool date_allowed_;
 
   // If true, we will convert RegExp JavaScript objects to string.
   bool reg_exp_allowed_;
 
   // If true, we will convert Function JavaScript objects to dictionaries.
   bool function_allowed_;
 
   // If true, undefined and null values are ignored when converting v8 objects
   // into Values.
   bool strip_null_from_objects_;
 
   bool avoid_identity_hash_for_testing_;
 
   // Strategy object that changes the converter's behavior.
   Strategy* strategy_;
 
   DISALLOW_COPY_AND_ASSIGN(V8ValueConverterImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_