D7834: Sync XRDB DPI to the platform specific setting

[David Edmundson]

davidedmundson created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  Even though this sets up the X rdb, we want to use the value the
  user has set to use when under wayland - as X apps will be scaled by the
  compositor.
  
  This ensures when I open firefox on my X or Wayland session it's the
  same size.
  
  Colors KCM part is needed as it includes ../krdb/krdb.cpp

TEST PLAN
  Logged in on X with my normal settings, opened Firefox
  Logged in on Wayland with my normal settings, opened Firefox
  
  Same size on both

REPOSITORY
  R119 Plasma Desktop

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D7834

AFFECTED FILES
  kcms/colors/CMakeLists.txt
  kcms/krdb/krdb.cpp

To: davidedmundson, #plasma
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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