Resize (or Dock) Tabs in Google Chrome Browser

If you use Windows and you want to quickly resize your browser window, drag the window or tab to pre-defined docking positions on your computer monitor or browser. When the docking icon appears, release the mouse over the icon to have the tab snap in place.

Here are the different docking positions:

• Top of your monitor (in the middle)
  The tab appears maximized in a new window when you release it.
• Bottom of your monitor (in the middle)
  The tab appears in a new window that fills the lower half of your monitor.
• [advt]Left and right sides of your monitor (in the middle)
  The tab opens in a new window that fills up either the left or right half of your monitor.
• Bottom of a browser window (in the middle)
  The tab appears in a new window below the existing browser window. The two windows splits the monitor in half.
• Left and right sides of a browser window (in the middle)
  The tab opens in a new window that fills up either the left or right half of your monitor. The existing browser window takes up the other half of the monitor, so that the two windows appear side-by-side.[source]