[gtk] (10 commits) Non-fast-forward update to branch ngl-less-shaders

[Matthias Clasen <matthiasc src gnome org>]

The branch 'ngl-less-shaders' 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:

  721e0f3... ngl: Consistently use gsk_scaled_premultiply
  5f3c271... ngl: Refactor gsk_ngl_render_job_visit_border_node
  1b1583e... ngl: Some cleanups
  86fb3d8... ngl: Some more cleanups
  5e00299... ngl: Improve the gradient shaders
  3478ce1... ngl: Improve the coloring shader
  7b3d450... ngl: Small shader improvements
  e0f074c... ngl: Don't bother with uniform border nodes
  f833b97... ngl: Fix up uniform enums
  1e751fe... ngl: Small cleanup
  7bea2d3... ngl: Special-case css backgrounds

Commits added to the branch:

  29501f5... ngl: Fix up uniform enums
  19e3a6a... ngl: Consistently use gsk_scaled_premultiply
  233969e... ngl: Refactor gsk_ngl_render_job_visit_border_node
  4aa570b... ngl: Drop gsk_ngl_render_job_set_color
  3f60c39... ngl: Rewrite gsk_ngl_render_job_visit_text_node
  c1f98d6... ngl: Improve the gradient shaders
  8aac574... ngl: Improve the coloring shader
  51074ca... ngl: Small shader improvements
  ed3f001... ngl: Don't bother with uniform border nodes
  28de2ee... ngl: Special-case css backgrounds