Take SeedGeneratorFromRegionHits constructor arguments as unique_ptrs

[makortel]

PR description:

This PR is a preparatory step to change PluginFactory to return std::unique_ptr.

(should be the last PR before making the change on the framework side, unless I've missed something)

PR validation:

Code compiles.

[cmsbuild]

The code-checks are being triggered in jenkins.

[makortel]

In retrospect this change should have been part of #26858.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-26939/9981

• This PR adds an extra 24KB to repository

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for master.

It involves the following packages:

RecoEgamma/EgammaElectronAlgos
RecoEgamma/EgammaHLTProducers
RecoMuon/TrackerSeedGenerator
RecoTracker/TkSeedGenerator

@perrotta, @Martin-Grunewald, @cmsbuild, @fwyzard, @slava77 can you please review it and eventually sign? Thanks.
@felicepantaleo, @jainshilpi, @abbiendi, @echapon, @varuns23, @battibass, @jhgoh, @lgray, @HuguesBrun, @trocino, @rociovilar, @Sam-Harper, @GiacomoSguazzoni, @rovere, @VinInn, @bellan, @mschrode, @ebrondol, @dgulhan, @calderona, @bachtis, @gpetruc, @folguera this is something you requested to watch as well.
@davidlange6, @slava77, @fabiocos you are the release manager for this.

cms-bot commands are listed here

[makortel]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/508/console Started: 2019/05/24 22:04

[cmsbuild]

+1
Tested at: 7e82060
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6a39b1/508/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6a39b1/508/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 33
• DQMHistoTests: Total histograms compared: 3206856
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3206521
• DQMHistoTests: Total skipped: 334
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 32 files compared)
• Checked 137 log files, 14 edm output root files, 33 DQM output files

[slava77]

+1

for #26939 7e82060

• technical
• jenkins tests pass

[Martin-Grunewald]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)

[fabiocos]

+1