Just three simple steps are needed which are shown in the three pictures below!
#001 Click the "spanner" logo > "History"
#002 Click "Clear all browsing data", or if you wish to clear certain history,
type in the keyword into "Search history" and the list will come out.
#003 Click "Clear browsing data", or if you wish to clear history of certain time, just click
"the beginning of time" and it will shown list of past time to be clear.