Enable StringUtils to split CharSequence like String#split

This is a groundwork for enabling LocaleSpan.

To enable LocaleSpan everywhere, we need to switch to
CharSequence from String so that Span infromation can be
preserved end-to-end.  To achieve this, we need to have
CharSequence version of String#split.

BUG: 16029304
Change-Id: I0dd103185dcf62fb1e25054a374340790e6a4678
2 files changed
tree: dc3bca66cd82fea03d7bc5be30f82286b4d133fa
  1. dictionaries/
  2. java/
  3. native/
  4. tests/
  5. tools/
  6. Android.mk
  7. CleanSpec.mk