Google Chrome web-browser on mobile-platforms features the option to reduce bandwidth costs and enable faster web-browsing utilizing the "Google Data Compression Proxy". The same had been made available to Google Chrome Desktop users via an unofficial Data Compression Proxy extension as shared earlier, now the feature is officially made available by Google as new Data Saver web-browser extension.
Once Data Saver extension is activated on Google Chrome, the web-browser will use Google servers to compress pages you visit before downloading them. Taking user's privacy into consideration, the service will bypass the compression proxy for SSL and incognito web-pages.