Make routes

src/content/usecases/ConsoleFrameUseCase.ts

@@ -0,0 +1,17 @@
+import ConsoleFramePresenter, { ConsoleFramePresenterImpl }
+  from '../presenters/ConsoleFramePresenter';
+
+export default class ConsoleFrameUseCase {
+  private consoleFramePresenter: ConsoleFramePresenter;
+
+  constructor({
+    consoleFramePresenter = new ConsoleFramePresenterImpl(),
+  } = {}) {
+    this.consoleFramePresenter = consoleFramePresenter;
+  }
+
+  unfocus() {
+    window.focus();
+    this.consoleFramePresenter.blur();
+  }
+}