Chrome to phone is a Google cloud to device messaging (a.k.a. C2DM) application which sends the links from your browser to your android device. To get it running, you need a Chrome extension that can be installed from chrome webstore and its android application from Google Play(Android market).
The android app for "Chrome to Phone" is location locked and is not available in markets for many countries.The uses from these countries can now enjoy this by downloading the apk file form here and installing on their phone.
Just make sure your phone is running on Android 2.2 or above!