Capitalize background scripts

src/background/usecases/LinkUseCase.js

@@ -0,0 +1,19 @@
+import SettingRepository from '../repositories/SettingRepository';
+import TabPresenter from '../presenters/TabPresenter';
+
+export default class LinkUseCase {
+  constructor() {
+    this.settingRepository = new SettingRepository();
+    this.tabPresenter = new TabPresenter();
+  }
+
+  openToTab(url, tabId) {
+    return this.tabPresenter.open(url, tabId);
+  }
+
+  openNewTab(url, openerId, background) {
+    return this.tabPresenter.create(url, {
+      openerTabId: openerId, active: !background
+    });
+  }
+}