57821 fix a typo in trace events for the image cache (cla: yes, framework, team, waiting for tree to go green)

57829 [flutter_tools] forward flutter format to dart format and deprecate (cla: yes, tool, waiting for tree to go green)

57830 [flutter_tools] validate android arch and build number (cla: yes, tool, waiting for tree to go green)

57838 Add sample code of  GestureDetector with no children (cla: yes, d: api docs, d: examples, documentation, f: gestures, framework, waiting for tree to go green)

57841 Deleted deprecated profile func and profile.dart (cla: yes, framework, waiting for tree to go green)

57868 [CheckboxListTile] exposes contentPadding property of ListTile. (cla: yes, f: material design, framework, waiting for tree to go green)