Greg Spencer f7e73b6236
Move TextRange from the framework to dart:ui. (#13747)
This removes TextRange from the framework and moves it to the engine, in preparation for using it to return text ranges from the text extent APIs, like Paragraph.getWordBoundary instead of a List<int>.

Also added new tests for TextRange.
2019-11-08 12:21:46 -08:00
..