Show "Saved messages" chat name in export UI.

Telegram/SourceFiles/export/export_controller.cpp

@@ -655,6 +655,9 @@ void Controller::fillMessagesState(
 	result.entityIndex = index + addIndex;
 	result.entityCount = info.list.size() + addCount;
 	result.entityName = dialog.name;
+	result.entityType = (dialog.type == Data::DialogInfo::Type::Self)
+		? ProcessingState::EntityType::SavedMessages
+		: ProcessingState::EntityType::Chat;
 	result.itemIndex = _messagesWritten + progress.itemIndex;
 	result.itemCount = std::max(_messagesCount, result.itemIndex);
 	result.bytesType = ProcessingState::FileType::File; // TODO

Telegram/SourceFiles/export/export_controller.h

@@ -48,6 +48,11 @@ struct ProcessingState {
 		GIF,
 		File,
 	};
+	enum class EntityType {
+		Chat,
+		SavedMessages,
+		Other,
+	};
 
 	Step step = Step::Initializing;
 
@@ -55,6 +60,7 @@ struct ProcessingState {
 	int substepsNow = 0;
 	int substepsTotal = 0;
 
+	EntityType entityType = EntityType::Other;
 	QString entityName;
 	int entityIndex = 0;
 	int entityCount = 0;

Telegram/SourceFiles/export/view/export_view_content.cpp

@@ -90,7 +90,9 @@ Content ContentFromState(const ProcessingState &state) {
 			"chat" + QString::number(state.entityIndex),
 			(state.entityName.isEmpty()
 				? lang(lng_deleted)
-				: state.entityName),
+				: (state.entityType == ProcessingState::EntityType::Chat)
+				? state.entityName
+				: lang(lng_saved_messages)),
 			(state.itemCount > 0
 				? (QString::number(state.itemIndex)
 					+ " / "