Roll engine 2494abd..70a1106 (3 commits)

flutter/engine@2494abd...70a1106

git log 2494abd..70a1106 --no-merges --oneline
70a1106 Unify copyright lines (flutter/engine#6757)
f9095fc Roll src/third_party/skia 62cc5f581747..b52c273d3f05 (13 commits) (flutter/engine#6783)
4cdddba Fix String comparison as if Java were Dart. (flutter/engine#6781)

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bin/internal/engine.version

@@ -1 +1 @@
-2494abdda728e1eada5647872d1c701c623a253e
+70a1106b509ea3f34febca59967ed7a76c05ce33