Declarative Web Request API
Note: The declarative web request API is available only on the beta channel and 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.
Resources
Screenshot
