Don't allow ppl to accidentally create empty chips

Fixes bug:5318460 com.google.android.gm: java.lang.IndexOutOfBoundsException: setSpan (33 ... 31) has end before start at android.text.SpannableStringInternal.checkRange(SpannableStringInternal.java:341)
As a user reproduced it
not sure if it fixes the monkey crash, but probably does

Change-Id: Ibed7e4f806f9f290c39d1c4834d8d67a8ccd179f
1 file changed
tree: 4a5c579c5ac5755a7a68cf5d98cc09aba008cf08
  1. res/
  2. src/
  3. Android.mk
  4. list_selector_pressed_holo_dark.9.png