Jason Simmons 4bd9085a47 Pass text input key events to the EventResponder if they do not yield characters (flutter/engine#20912)
If the InputConnectionAdaptor receives a key event that does not move
the caret or produce a text character (such as the back button), then
the event should be given to the EventResponder which will forward it
to the view.

Fixes https://github.com/flutter/flutter/issues/64864
2020-08-31 17:56:09 -07:00
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