You can search your Google Drive files directly from Chrome’s Omnibox: Go into the “Edit search engines” menu and add a new search engine with the name “Google Drive” and the keyword
gd(or whatever keyword you prefer). For the URL, enter
http://drive.google.com/?hl=en&tab=bo#search/%s, then click the Done button.
gdinto the Omnibox, hit Tab, and search away within your own Drive files.