As a developer I would like to see recent searches that I've run, because:

• I don't always know what I want and have to see what I have searched previously for
• I don't always want to remember what I search for after my machine reboots or browser closes
• I might want to go back to prior code fragments

Browser history is good for very immediate reference (forward/back).

Bookmarks are good for long-term reference.

Search history is some where in-between.