Roll engine to version 78f8bcace79bd39d1dced3fd2280a3a1f9f25e0c

Includes the following changes:
78f8bcace Annotate deprecated methods with @Deprecated (#5976)
4c7e5d5a1 Roll src/third_party/skia 0c5b0b1dd692..9c9611fcc1bb (13 commits) (#5977)
4208f8404 make ios text affinity behavior match android (#5971)
69b19a5f5 Roll src/third_party/skia f5402004c4a6..0c5b0b1dd692 (11 commits) (#5975)
8137d3411 Roll src/third_party/skia 4856f5fa596d..f5402004c4a6 (1 commits) (#5974)
cbe960d90 Roll src/third_party/skia 20714bdf90f3..4856f5fa596d (1 commits) (#5973)
f05a4ccaa Roll src/third_party/skia faeef7837210..20714bdf90f3 (11 commits) (#5970)
14af0348b Complete the AndroidView resize call only after a new frame is ready. (#5968)

bin/internal/engine.version

-08b660ed12e89ef4e600df9ff5fe029acead505e
+78f8bcace79bd39d1dced3fd2280a3a1f9f25e0c