1 files changed, 57 insertions, 0 deletions
diff --git a/chromium/extensions/browser/value_store/value_store_change.cc b/chromium/extensions/browser/value_store/value_store_change.cc
new file mode 100644
index 00000000000..3bbad592d06
--- /dev/null
+++ b/chromium/extensions/browser/value_store/value_store_change.cc
@@ -0,0 +1,57 @@
+// Copyright 2014 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 "extensions/browser/value_store/value_store_change.h"
+
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+
+// static
+std::string ValueStoreChange::ToJson(
+    const ValueStoreChangeList& changes) {
+  base::DictionaryValue changes_value;
+  for (ValueStoreChangeList::const_iterator it = changes.begin();
+      it != changes.end(); ++it) {
+    base::DictionaryValue* change_value = new base::DictionaryValue();
+    if (it->old_value()) {
+      change_value->Set("oldValue", it->old_value()->DeepCopy());
+    }
+    if (it->new_value()) {
+      change_value->Set("newValue", it->new_value()->DeepCopy());
+    }
+    changes_value.SetWithoutPathExpansion(it->key(), change_value);
+  }
+  std::string json;
+  base::JSONWriter::Write(changes_value, &json);
+  return json;
+}
+
+ValueStoreChange::ValueStoreChange(
+    const std::string& key, base::Value* old_value, base::Value* new_value)
+    : inner_(new Inner(key, old_value, new_value)) {}
+
+ValueStoreChange::ValueStoreChange(const ValueStoreChange& other) = default;
+
+ValueStoreChange::~ValueStoreChange() {}
+
+const std::string& ValueStoreChange::key() const {
+  DCHECK(inner_.get());
+  return inner_->key_;
+}
+
+const base::Value* ValueStoreChange::old_value() const {
+  DCHECK(inner_.get());
+  return inner_->old_value_.get();
+}
+
+const base::Value* ValueStoreChange::new_value() const {
+  DCHECK(inner_.get());
+  return inner_->new_value_.get();
+}
+
+ValueStoreChange::Inner::Inner(
+    const std::string& key, base::Value* old_value, base::Value* new_value)
+    : key_(key), old_value_(old_value), new_value_(new_value) {}
+
+ValueStoreChange::Inner::~Inner() {}