In light of the recent controversy (Dec 2013) over the Chrome extension titled "Window Resizer", what are some alternative solutions to quickly resizing the Chrome browser for responsive development testing?
Another native solution to test responsive designs is to use the built-in Chrome Developer Tools. Choose Tools->Developer Tools, then click the gear icon in the bottom-right corner of the window that pops up. Click "Enable" then click "Device Metrics" and you can specify whatever resolution you'd like to replicate.
Also, by changing the "User Agent" on that screen, Chrome sets the device metrics for the chosen device, which may come in-handy when deciding where your responsive breakpoints should be for the more-popular devices.
This isn't as easy as a two-click extension, but it has the advantage of being an extension-less solution, and also using exact screen measurements of actual devices.