commit c89e22a6ff227089fde26daea186346029d1b32c
author Yohei Yukawa <yukawa@google.com> Wed Jan 13 22:48:14 2016 -0800
committer Yohei Yukawa <yukawa@google.com> Wed Jan 13 22:48:14 2016 -0800
tree 7e35fffa8eedb1225e4b34ca139796bc819bfdff
parent a1dcb87565ab9a34ae14efebe4743701068cffad

Introdude IC#deleteSurroundingTextInCodePoints().

This CL introduces a API variant of IC#deleteSurroundingText(), named
IC#deleteSurroundingTextInCodePoints().  Major differences from
the existing one are:
  - The lengths are supplied in code points rather than code units.
  - This API does nothing if there are one or more invalid surrogate
    pairs in the requested range.  (Failure Atomicity)

Note that due to the asynchronous nature of the input method
architecture in Android, implementing the same logic in the input method
side basically ends up with unreliable and unpredictable results.

Bug: 6526420
Change-Id: I7f6a2c5d3d52079ae71623fd5e40d60c688dd5fb