Bug 1789482 - Let cairo-quartz-surface use DO_IMAGE for the EXTEND_PAD case as well as EXTEND_NONE, and re-enable the use of CGLayer-backed cairo-quartz surfaces for better pdf.js print quality. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D159623

gfx/cairo/cairo/src/cairo-quartz-surface.c

@@ -1315,7 +1315,7 @@ _cairo_quartz_setup_state (cairo_quartz_drawing_state_t *state,
 
 	srcRect = CGRectMake (0, 0, extents.width, extents.height);
 
-	if (source->extend == CAIRO_EXTEND_NONE) {
+	if (source->extend == CAIRO_EXTEND_NONE || source->extend == CAIRO_EXTEND_PAD) {
 	    int x, y;
 	    if (op == CAIRO_OPERATOR_SOURCE &&
 		(pat_surf->content == CAIRO_CONTENT_ALPHA ||

modules/libpref/init/StaticPrefList.yaml

@@ -5470,7 +5470,7 @@
 #if defined(XP_MACOSX)
 - name: gfx.cairo_quartz_cg_layer.enabled
   type: bool
-  value: false
+  value: true
   mirror: always
 #endif