The adjustment for UCCB is applied automatically to your CCTB eligibility as noted above, assuming you report the UCCB.
( CRA will do it anyway, as they have all your UCCB slip data).
All of the pension income you received while resident in Canada ( either one-time or regular payments) must be reported, regardless of source. It is ALL included in your Net Income line 236 and there is no deduction prior to that line, unless as I state below you are dealing with registered amounts. Therefore all this income is taken into account for CCTB purposes ( but not for UCCB).
In the later comments by Delphision, it is noted that you should by tax treaty deduct your pension at line 256, which removes it from Taxable Income line 260, preventing double taxation.
( this affects the tax you will pay, but has no impact on CCTB eligibility).
