Browsing Latvian translation

note: 'A button for unlocking the managed user settings page.'
note: 'A title for the passphrase page to unlock managed user settings.'
note: 'Label for OK button in the dialog that prompts for security device password.'
note: 'The button to unlock the extensions for a managed user.'
note: 'The text on the button that is used by a managed user to unlock the controls.'
in: upstream/cr-28.0.1500.95/chrome/app/generated_resources.grd, as IDS_HISTORY_UNLOCK_BUTTON
in: upstream/cr-28.0.1500.95/chrome/app/generated_resources.grd, as IDS_EXTENSIONS_UNLOCK_BUTTON