In their recent chrome update now we see Google logo and a search box and recently visited page instead of Apps and Most visited.
And I guess you did not like this new update and want to revert back to as it was.
Just follow this step and you will old look back.
1) goto chrome://flags/
2) press ctrl+f and look for "Enable Instant Extended API"
3) Select "Disable"
4) close google chrome and reopen :)