One more feature release from Gmail labs. This time they have integrated google search right into Gmail.
When we enable search feature from Gmail labs Tab, a small web search box is displayed on left side bar. E.g. I tried searching for term ‘facebook’ and search results appeared right insider Gmail window. See image below marked in bold red.
So next time when you want to search while using Gmail then there will no need to leave Gmail window/tab. However, when I enabled this feature , it took time to get this feature work. But when I reloaded Gmail again then everything started working fine as seen above.