[gtk] (6 commits) Non-fast-forward update to branch color-picker

[Matthias Clasen <matthiasc src gnome org>]

The branch 'color-picker' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  cfc53d6... Add a color picker interface
  3ec5598... color editor: Add a color picker button
  62a1943... Add a color picker implementation for portals
  a3ea849... Add a color picker implementation for gnome-shel
  bbf0830... color picker: Don't use g_warning
  c48758d... tests: Update a11y tests

Commits added to the branch:

  99541d7... fixup the resource generation for icons
  9b5838d... Add a color picker interface
  90581d5... color editor: Add a color picker button
  b4bb85e... Add a color picker implementation for portals
  c68881c... Add a color picker implementation for gnome-shel
  4301a44... tests: Update a11y tests