Andrey Lushnikov f5ecbff16e devops: remake downloading logic (#1419) ... This patch: - removes `browserType.downloadBrowserIfNeeded()` method. The method turned out to be ill-behaving and cannot not be used as we'd like to (see #1085) - adds a `browserType.setExecutablePath` method to set a browser exectuable. With this patch, we take the following approach towards managing browser downloads: - `playwright-core` doesn't download any browsers. In `playwright-core`, `playwright.chromium.executablePath()` returns `null` (same for firefox and webkit). - clients of `playwright-core` (e.g. `playwright` and others) download browsers one way or another. They can then configure `playwright` with executable paths and re-export the `playwright` object to their clients. - `playwright`, `playwright-firefox`, `playwright-chromium` and `playwright-webkit` download browsers. Once browsers are downloaded, their executable paths are saved to a `.downloaded-browsers.json` file. This file is read in `playwright/index.js` to configure browser executable paths and re-export the API. - special case is `install-from-github.js` that also cleans up old browsers.		2020-03-19 11:43:35 -07:00
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index.js	devops: remake downloading logic (#1419)	2020-03-19 11:43:35 -07:00