My new thread tell you how to protect your chrome browser by other user access,for protection i am use the password security.
Here we use a Chrome Extension for protect browser.
First Download the Extension By click HERE
After Installation Go to Tool option and click on them,when you click the Tool then a slide open where you found 'Extensions' click here.
When you click the Extensions then a page open like given below picture where you find 'Simple Startup Password'...
Here save your password,if you want remove password protection then disable it.