old_contents: import { chrome } from "../src";
  
  describe('browser.extension', () => {
      test('getURL', () => {
          expect(jest.isMockFunction(chrome.extension.getURL)).toBe(true);
      });
  });
  
new_contents: describe('browser.extension', () => {
      test('getURL', () => {
          expect(jest.isMockFunction(chrome.extension.getURL)).toBe(true);
      });
  });
  
subject: Remove chrome import