[gtk] (14 commits) Non-fast-forward update to branch places-sidebar-dnd

[Ernestas Kulik <ernestask src gnome org>]

The branch 'places-sidebar-dnd' 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:

  d05ccb6... placessidebar: Take a GdkDrag in _set_drop_targets_visible(

Commits added to the branch:

  17b1e7b... docs: Fix scroll and motion controller titles (*)
  446b2e2... Avoid a g_object_get path (*)
  b7d948a... gl renderer: Use a GArray for the shadow cache (*)
  5386cf8... GskRoundedRect: Typo (*)
  960717b... window: Don't queue an allocate if the css clip changes (*)
  3f126c7... Remove GTK_CSS_AFFECTS_CLIP (*)
  392b4d9... gl renderer: Pull a few declarations into the closest scope (*)
  cf7fa93... sizerequest: Only check reported baselines if requested (*)
  4bc1455... Correctly mark an enum value in a doc comment (*)
  f699fff... sizerequest: Pull locals into closest scope (*)
  480a2c2... widget: Remove another ->priv usage (*)
  04eb7ee... Remove icon extents API (*)
  6fe0a8c... gesturestylus: Clarify a documentation comment (*)
  4b2d631... placessidebar: Take a GdkDrag in _set_drop_targets_visible(

(*) This commit already existed in another branch; no separate mail sent