Clamp EditText cursor in the drawable boundaries.

EditText tried to draw outside of the padding boundaries because of a
cursor positioning issue in RTL. This CL removes that fix and instead
clamps the cursor position if cursor is outside of the clipped view
boundary.

Bug: 23397961
Change-Id: Id5f1fbe2a0f571100c89b21758fbb81b14d5da57
3 files changed