c56c896 Roll src/third_party/skia f0b6044d6d20..0c75727f0148 (4 commits) (flutter/engine#7141)

engine-flutter-autoroll · engine-flutter-autoroll · commit 72fdce67983d · 2018-12-11T20:06:37.000Z
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
@@ -1 +1 @@
-b74d8787ccab69635c8f99f2ed291ccd05f542f4
+c56c896bd6aea9607d3f1dec8566147b01fb8639
