diff -r 000000000000 -r 6474c204b198 gfx/skia/README_MOZILLA
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/README_MOZILLA	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+The source from this directory was copied from the skia subversion trunk
+using the update.sh script. The changes made were those applied by update.sh,
+the addition/update of Makefile.in files for the Mozilla build system.
+
+The subversion revision used was r13827.
+
+To update to a new version of Skia:
+
+- Copy the entire trunk/ directory from a Skia clone to mozilla-central/gfx/skia
+- cd gfx/skia && ./gyp_mozbuild
+
+Once that's done, use git status to view the files that have changed. Keep an eye on GrUserConfig.h
+and SkUserConfig.h as those probably don't want to be overwritten by upstream versions.
+
+This process will be made more automatic in the future.