Summary:
The moved code fragment is a workaround for a bug in UITextField in iOS 8. There is no need to have this code in a general base class that serves both UITextField- and UITextView-based components. Especially for such workarounds like that, we have a dedicated class RCTUITextField. This diff moves that there.
Read more about the bug:
https://stackoverflow.com/questions/14220187/uitextfield-has-trailing-whitespace-after-securetextentry-toggle/22537788#22537788
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D18444734
fbshipit-source-id: a3764c19f562231ba3fa3d4c0ad7de069ea04d98
d5ec68f841