Defines properties that can be customized when creating a new page.
Whether to create the target in background or foreground (chrome-only, false by default).
Frame height in DIP (headless chrome only).
If true, the new target is created in a separate browser context (think of it as incognito window).
Whether to create a new Window or Tab (chrome-only, false by default).
Frame width in DIP (headless chrome only).