Weird chrome icon on my macbook pro?
I would suggest reinstalling Google Chrome rather than going to the trouble of manually replacing the icon. Download it here.

Oh, and to restore all your bookmarks, history, etc., go to Prefs>Personal Stuff>Sync. Login with your Google Account and ta da! All your bookmarks and data are synced. Then, when you reinstall Chrome, login again, and all your data will be restored.