You can use the desktop developer tools for your phone or tablet
Developers will love Chrome for Android since it comes with a full set of dev tools. You can connect it to a remote debugger, which you can run on your desktop, and enjoy all of the tools that the desktop version provides."In addition to support for the latest web technologies, we hope to make interactive web content super easy to develop," Google explained.
"Chrome for Android introduces remote debugging through Chrome Developer Tools to make it simple for developers to debug web sites running live on their mobile devices," it wrote.
You have to connect your phone via USB and enable "USB Web debugging" on it. You will then be able to use Chrome's full set of developer tools for the pages loading on your phone or tablet just as you would for a local page. There's a guide on how to do that over here and more info here.