Reverts flutter/engine#5376
It was causing failures of the sort:
$ flutter test --local-engine=host_debug_unopt test/cupertino/scrollbar_paint_test.dart
00:06 +0: - Paints iOS spec
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
The following TestFailure object was thrown running a test:
Expected: Object or closure painting: 'a rounded rectangle with Color(0x99777777),
RRect.fromLTRBR(795.0, 4.0, 797.5, 86.0, 1.3)'
Actual: ?:<exactly one widget with type "CupertinoScrollbar" (ignoring offstage widgets):
CupertinoScrollbar(state: _CupertinoScrollbarState#c371a(tickers: tracking 1 ticker))>
Which: threw the following exception:
'': error: native function 'Canvas_translate' (3 arguments) cannot be found
47746e586a