Use Encrypted Google via Omnibar in Chrome

You can modify your Omnibar in Chrome to always search using https://encrypted.google.com, so that your searching can't be easily filtered

• Open chrome://settings/searchEngines#search
• Add a new search engine --> "Encrypted Google"
• Keyword --> "encrypted.google.com"
• URL --> "https://encrypted.google.com/search?q=%s"
• Click Done

Hover over the "Encrypted Google" entry and click Make Default in the URL column

source: http://thepizzy.net/blog/2011/04/how-to-set-google-ssl-search-as-your-default-search-engine-in-chrome-os/