Created SerializedUserDataManager.

ios/web/navigation/serialized_user_data_manager_impl.mm

Index: ios/web/navigation/serialized_user_data_manager_impl.mm
diff --git a/ios/web/navigation/serialized_user_data_manager_impl.mm b/ios/web/navigation/serialized_user_data_manager_impl.mm
new file mode 100644
index 0000000000000000000000000000000000000000..22bb578e58a28fc4e0bde21fb755d1e0e3b87c50
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+++ b/ios/web/navigation/serialized_user_data_manager_impl.mm
@@ -0,0 +1,93 @@
+// Copyright 2015 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 "ios/web/navigation/serialized_user_data_manager_impl.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "ios/web/public/navigation_manager.h"
+
+namespace {
+
+// Private key used to store BrowserContextUserDataWrappers in a
+// NavigationManager's user data.
+const void* const kSerializedUserDataManagerWrapperKey =
+    &kSerializedUserDataManagerWrapperKey;
+
+// Wraps a SerializedUserDataManagerImpl in a SupportsUserData::Data.
+class SerializedUserDataManagerWrapper : public base::SupportsUserData::Data {
+ public:
+  // Returns the SerializedUserDataManagerWrapper for |manager|, lazily creating
+  // one if necessary.
+  static SerializedUserDataManagerWrapper* FromNavigationManager(
+      web::NavigationManager* manager) {
+    DCHECK(manager);
+    SerializedUserDataManagerWrapper* user_data_manager_wrapper =
+        static_cast<SerializedUserDataManagerWrapper*>(
+            manager->GetUserData(kSerializedUserDataManagerWrapperKey));
+    if (!user_data_manager_wrapper)
+      user_data_manager_wrapper = new SerializedUserDataManagerWrapper(manager);
+    return user_data_manager_wrapper;
+  }
+
+  // Returns the SerializedUserDataManager for this wrapper.
+  web::SerializedUserDataManager* GetUserDataManager() const {
+    return user_data_manager_.get();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SerializedUserDataManagerWrapper);
+
+  // The SerializedUserDataManager owned by the wrapper.
+  scoped_ptr<web::SerializedUserDataManagerImpl> user_data_manager_;
+
+  // Private constructor used to create a new wrapper for |manager|.
+  explicit SerializedUserDataManagerWrapper(web::NavigationManager* manager)
+      : user_data_manager_(new web::SerializedUserDataManagerImpl()) {
+    DCHECK(manager);
+    manager->SetUserData(kSerializedUserDataManagerWrapperKey, this);
+  }
+};
+
+}  // namespace
+
+namespace web {
+
+// static
+SerializedUserDataManager* SerializedUserDataManager::FromNavigationManager(
+    NavigationManager* manager) {
+  return SerializedUserDataManagerWrapper::FromNavigationManager(manager)
+      ->GetUserDataManager();
+}
+
+SerializedUserDataManagerImpl::SerializedUserDataManagerImpl()
+    : dictionary_([[NSMutableDictionary alloc] init]) {}
+
+SerializedUserDataManagerImpl::~SerializedUserDataManagerImpl() {}
+
+void SerializedUserDataManagerImpl::SetValueForSerializationKey(
+    SerializedUserDataType data,
+    NSString* serialization_key) {
+  DCHECK(serialization_key.length);
+  if (data)
+    [dictionary_ setObject:data forKey:serialization_key];
+  else
+    [dictionary_ removeObjectForKey:serialization_key];
+}
+
+SerializedUserDataType
+SerializedUserDataManagerImpl::GetValueForSerializationKey(
+    NSString* serialization_key) const {
+  return [dictionary_ objectForKey:serialization_key];

[Eugene But (OOO till 7-30), 2015/09/24 17:05:07]

DCHECK(serialization_key.length)

[kkhorimoto, 2015/09/24 21:24:29]

Done.

+}
+
+NSDictionary* SerializedUserDataManagerImpl::GetSerializationDictionary()
+    const {
+  return dictionary_;

[Eugene But (OOO till 7-30), 2015/09/24 17:05:07]

I would return an autoreleased copy of this dict to avoid issues in the future.
However It's up to you.

[kkhorimoto, 2015/09/24 21:24:29]

Done.

+}
+
+void SerializedUserDataManagerImpl::AddValuesFromDictionary(
+    NSDictionary* dictionary) {
+  [dictionary_ addEntriesFromDictionary:dictionary];

[Eugene But (OOO till 7-30), 2015/09/24 17:05:07]

DCHECK(dictionary)

[kkhorimoto, 2015/09/24 21:24:29]

Done.

+}
+}