Bug 1639574 - Disable color management for CSS due to issues with canvas. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D76859

modules/libpref/init/StaticPrefList.yaml

@@ -3750,7 +3750,7 @@
 # See eCMSMode in gfx/thebes/gfxPlatform.h.
 - name: gfx.color_management.mode
   type: RelaxedAtomicInt32
-  value: 1
+  value: 2
   mirror: always
 
 # The zero default here should match QCMS_INTENT_DEFAULT from qcms.h

testing/profiles/reftest/user.js

@@ -41,7 +41,7 @@ user_pref("extensions.getAddons.cache.enabled", false);
 user_pref("extensions.getAddons.get.url", "http://localhost/extensions-dummy/repositoryGetURL");
 user_pref("extensions.systemAddon.update.url", "http://localhost/dummy-system-addons.xml");
 user_pref("gfx.color_management.force_srgb", true);
-user_pref("gfx.color_management.mode", 1);
+user_pref("gfx.color_management.mode", 2);
 user_pref("gfx.logging.level", 1);
 // Disable downscale-during-decode, since it makes reftests more difficult.
 user_pref("image.downscale-during-decode.enabled", false);