Cherry-picked 6fc92899d82f4d3cb30f7bb2c57133154f0babd2 from
ub-latinimegoogle-edamame-mr1-release.

Bug: 18418991
Change-Id: Id4dff41ba488635ff9af899be6d4f84ab00a96c8

With this CL, the previously used commit indicator was reverted.
Instead we use the add-to-dictionary indicator only at the moment.

This CL also fixes the indicator position in bidi context.

BUG: 17335734
Change-Id: I5f7cf173ddc30876e2b01320acaff8ba4265edf6

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

This CL removes following methods from StringUtils, which are
no longer used since Id3c262386a7bc7ed75966b1395a50171abe550d3.
- #joinCommaSplittableText
- #appendToCommaSplittableTextIfNotExists

BUG: 16000850
Change-Id: Ibdc9b7e463a19cdfac788b24c0a6322d0c5850c5

This reverts commit ba463c9a that broke the dicttool build.

Bug: 14425059
Change-Id: Ie1685587104d26e4416624747c97f6087c13388a

Bug: 14425059
Change-Id: I3eb24e840c165e43f68c2a60fccf9974affb57a6

Change-Id: I21a4219f682f43f4a84b1ab12d00dd930b35caa1

Change-Id: If16ef50ae73147594615d0f49d6a22621eaf1aef

Bug: 14985751
Change-Id: I9df2f737555ab02e24e0fbd231a97c1eec26bc57

Bug: 13406701
Change-Id: I09edd822f5cc2446b324d41c76d835bcff1191e6

Bug: 13406701
Change-Id: I2e271f637f6b529a4191a7adc5cdfa5af437761b

Bug: 13017434
Change-Id: I38b1f5c261ea1f3ff312c780d7d9b5fe3fba8aaf

Bug: 12810574
Change-Id: I607803e924b9e99855df7690e67488b2861c120e

Change-Id: I29d87fdd65ec879d1c0bdf7e7792a677687c1693

Bug: 8911672
Change-Id: I5d5635949530a67f95e5208986907251b7bce903

Change-Id: I382abd3104d535a1e868935d8cfb4e34ad8ebaed

This is necessary for tests

Bug: 8636060
Change-Id: I50ea401a22e4df72333eda61ca39aa180966ee4b

Change-Id: I4103541d99fe59bfcf12379a1298a0a690497846

Change-Id: I78d488ad84a11af809ee1f8d3d2fa01a89fbfa28

Change-Id: I6d0b572190080e58e95f72856ad39e72a49537b7

This change must be checked in together with Iec437d6df0.

Change-Id: Idf745b8870965f3bdf690de7ff3b22f83f6204bf

This is simpler and more correct.

Change-Id: I41806d2fc12b4ca25f76e32972b38f91f3d05c2b

The bulk merge from -bayo to klp-dev should not have been merged to master.

Change-Id: I527a03a76f5247e4939a672f27c314dc11cbb854

Change-Id: I2a89497fb9ec12a37ba09f4598742e88f6700576

Change-Id: I88ed0d25bee87c4dabcbc425589215b901345908

Bug: 11678247
Change-Id: I4a2061fae264473e1ebff6961aa897367ef9cc09

Change-Id: I80ad9d8b5aee53f1403486a56ffae8d09cbd4e28

Small optimization on generating a String instance from a single code
point too.

bug: 11181913

Change-Id: I0f905e4dc6ec7841092bb4d3d940daf3b2303f5b

Followup to If4e44eca3cdc5bb02cf2e0c8c44ecd4bf27fae57

bug: 10622489
Change-Id: If98b2c75725f8692f0c2b41c33e448086404479b

The PARAGRAPH type of span is dangerous, as concatenating
CharSequences that contain it may crash. We also don't use
other spans than SuggestionSpans, so we don't copy them.

Bug: 10622489
Change-Id: If4e44eca3cdc5bb02cf2e0c8c44ecd4bf27fae57

Bug: 10538430

Change-Id: Ia2e423eb1843195b3c3218afc79a5820b8cd729b

Change-Id: Id4f4a287e3a2790b22bff7ad4a4617bf2ee82884

Bug: 9429906
Change-Id: I3267d1d86122ab471c3e63008c73e9f9b758fc8e

Change-Id: I10bd8fcc68711a039e000f715d7a65ae42095965

Bug: 9429906
Change-Id: I73bbf65985196d62470552c576bb076a7cb95008

...and test it.

Also at the same time, add a facility to create a SettingsValues for
test, and some minor performance improvement to surrounding
methods.

Change-Id: I13b629ae14755c244af2a9406a7e9b4a4a16090f

Change-Id: I1c5b27c8edf231680edb8d96f63b9d04cfc6a6fa

Change-Id: I16e3f3ebc43772cfd96c824afeddfd225404b857

This is a follow up of I5a32882a08.

Change-Id: I9f0cda2167811f6bba2af042fbde0a821b4cfecd

Change-Id: I5a32882a088e4ff5bfe973a86465d6ff839113d9