Declarative Web Request API Sample

Declarative Web Request API Note: The [declarative web request API](https://developer.chrome.com/extensions/declarativeWebRequest)…

Declarative Web Request API Note: The [declarative web request API](https://developer.chrome.com/extensions/declarativeWebRequest) is available only on the [beta channel](https://www.google.com/landing/chrome/beta/) and [dev channel](http://www.chromium.org/getting-involved/dev-channel). This sample will not work on stable channel builds. This sample shows how to use the declarative web request API with a webview. The app implements a simple content blocker for URLs that match a RE2 regular expression. The default pattern blocks hosts that contain blogspot. (such as blogspot.com blogs) or gstatic. (such as thumbnails in Google image search). Top frame and sub-frame navigation redirects the whole webview to a "page blocked" page (see screenshot left). Image loads are redirected to a dummy image that contains a shortened version of the image URL as text (see screenshot right). The user can modify the URL matching pattern using a form on the top-right. Content blocking actions are logged beneath the form on the top-right. See the source code at https://github.com/GoogleChrome/chrome-app-samples/tree/master/webview-samples/declarative-web-request This version was built from git commit 8dfb9ab https://github.com/GoogleChrome/chrome-app-samples/tree/8dfb9ab/webview-samples/declarative-web-request