This has a good, although small, impact on performance : it removes
a two-way IPC call in a most frequent case, while possibly adding
one in a rather unfrequent and less critical case.

Also, this fixes a bug with surrogate pairs. This specific branch
of code now correctly handles surrogate pairs.
Aside from this, it should have no impact on behavior.

However, since it does delay access to the previous character in
the text view by a two-way IPC call, it actually goes a long way
toward fixing bug#6668226. It is not really a fix and the race
condition still exists, but this change makes it much, much
harder to hit.

Bug: 6668226
Change-Id: Id11cc6a0b7488d6bd392227cafdcf3a8d4c62f6c

* commit '216c29ec':

Change-Id: Ic79723ed73516cae44dc9f6d1f1a1b2cc4f461bc

* commit 'f3e54e10':
  Import translations. DO NOT MERGE

* commit 'f44adb18':
  Import translations. DO NOT MERGE

Change-Id: Ida61fe3b2464868d3bb6d4b42032273edbf39689

Change-Id: If472b6e3c80691ad057990f7c6e2710fc8758e2a

Also cleaned up the privacy code a bit.

multi-project commit with Change-Id: Ic0919a6929ebb2623ff4124f7adc96d9e5f8df3c

Bug: 6188932
Change-Id: Id470fe7cc6e4a8fb01f1ea5b178a74cd27d59218

Change-Id: Id0806ad3dc7ccb632713eebaca76f0bab26ece5d

Change-Id: Ifb15553824915d0634aea83689302c2418b093f3

Change-Id: Ic9cd1c250611e5b25604d55d4115391068052f36

Change-Id: Iecc9b3d43c191614c2951408e14085cb77eefd4d

Change-Id: I662be9d3b31fb9e157722f38cab1e6fb8a1152ab

* commit 'e2106796':

Change-Id: Ibde708a3b56604dea5f6eb4699519c0981b04aeb

* commit '899b3cb7':
  Fix UserHistoryBigram data contention in UserHistoryDictionary

Change-Id: Ie0250595352401f59f3e5b32b6121b184102d327

* commit '8ce23247':
  Shorten the key typing timeout parameter to 350ms

* commit 'cc2f8c27':
  Shorten the key typing timeout parameter to 350ms

Bug: 6688921
Change-Id: Ia6d6d98577769a3ce6a39873559993229156f2b8

am 50152821: am a1425660: Merge "Make sure whitelist targets are in the main dictionary" into jb-dev

* commit '50152821':
  Make sure whitelist targets are in the main dictionary

* commit 'a1425660':
  Make sure whitelist targets are in the main dictionary

* commit '5e50c97a':
  Import translations. DO NOT MERGE

Change-Id: I1f989dc6fc44d4e5a7632630fc2717d6a51b9eb8

* commit 'd7cedda9':
  Import translations. DO NOT MERGE

Change-Id: I151800deab6dc7754d4671e860585dec1b057472