UserBigramDictionary -> UserHistoryDictionary.

Also update all methods, strings and comments, except those needed
for backward compatibility (which only include the name of the
database file).

Change-Id: I0bccea29880dc566b90100575b83baaa947b03ae

Change-Id: I6d91f3b086470b79306dbe2874db9748b9e0eb5f

bug: 6181736

Change-Id: I6522f19555c27f33c9ff4eaa8b2559a51a38f015

Bug: 4343280

Change-Id: I6adaf560f7a4f1f96dcb6ec2f61f20ee3001167e

This isn't used any more.

Change-Id: Ie63ae621bcac9342b869b9f236f35bf66ec3a09b

UserBigramDictionary now assumes both functionalities. It will
be renamed to UserHistoryDictionary in a future change.

There are several reasons to do this. First, there is a lot of
duplicate code in User{Unigram,Bigram}Dictionaries that are
factored by the few lines of code in this change. Also, other
dictionaries like BinaryDictionary or ContactsDictionary all
assume both responsibilities, as should be the case
theoretically.

It is also possible to do this because previous versions don't
write any unigram data that we'd want to reuse. For even older
versions that do write data, we can't really make any sense out
of it. Bigram data however can be useful, and this allows us to
reuse it easily.

Change-Id: I755525f92744e1536eaef097527e8151b7859a30

Bug: 4343280
Change-Id: I4e2dfb00d9c843a8a285d409ac5ab8fca5fb1694

A lot of things don't really make sense in the old code.
Let's streamline it for now so that we have a cleaner interface
to work with. This is preliminary work for bug 4192129.

Change-Id: If01a5974cfadc43afced610c57fcf7fde67c1346

KeyDetector should use the distance from the hit box to detect the
key.

Bug: 6174250
Change-Id: Id1745d90222d1d1a10467f194b45307c12449944

Change-Id: I78f22bb38222fea54a55e460fcf728bf941d15e9

Bug: 6174065
Change-Id: I702760d44ead0eeb60d06360aa3bb03c2ec73325

Exit-fast, update comment, make a method private

Change-Id: Id103bf03aeef43a1a4d064ecabb819490dc5d39a

I tracked all the calls to the constructor, and the passed
list is never null. It's also final, so it's safe.

Change-Id: I320f907acee0b237bb286a9a183c18106809174a

Change-Id: Ia1c80eeff00a55573bb311f07e1275da23bdcf98

Change-Id: I58de87c1ba4cd1130419191f63ff83b685604356

All calls to this methods are made with an actual String. No sense
beating ourselves with an interface stick.

Change-Id: I6ef98286be6f81f73864b04f3a17e68f36a6e542

Change-Id: I6950897d262f610d502b7f8293b9dd8d2b53e6e8

This has been moved to the SuggestedWords object and is now
represented by a single flag instead of a flag in each suggestion.

Change-Id: I6e9a7cff5a7701de7e61b4de13baac25c9a87b1b

Also, the first word in a sugestions list can never be
obsolete.

Change-Id: Ib21439aac8db4e6ce5b15b7a2aabe4222bc354db

Change-Id: I9684c7b08244b34853ce8a99b6e9d885389f6687

Change-Id: I43dae30774c40a9d6e7396f8fa73ed4b82a7c777

Change-Id: I5aee4c36ceaacbb1dbfc47c011f1e4aec4b9dca6

Bug: 4343280

Test:  I11f8518d9ee

Change-Id: I4b90bdffffed9736af223ac83c1a54019add70bb

Change-Id: Ide3f605ce40e8c230f217bbf37ab016457ee91f1

In-place replacements of visibly identical things.

Change-Id: I02b51bd7f63597e3428f0650b239e9a39ef5a7c7

Change-Id: I791700890338e023bd86b8794dbc90379b91dc7d

We know the size in advance, this may save a few allocations

Change-Id: I2fb9a725f34ba2da4f34ed335652f10447d5d166

Just write the same thing in a more succint manner

Change-Id: I08a2c5edd52a3502914541061fd5b6ee7a92ebc4

Renaming some variables, and obvious optimizations.

Change-Id: Ib716748e9f3d602cf276dcd4e73f3bcfb819585e

Change-Id: I03005240238fb004c20b2df0d836796e2e8b307f

Change-Id: I208dd2e725e37c2fb3cd51fe48194679e5912f6b

Change-Id: Idef22e6a82d59e3ec95b95ad237debcb07daf000

We have to match one way or another, and the argument order to the
Builder call is more logical.

Change-Id: Iac7c3a351c2687cb294d6a4924fd9cb20ca95177

Change-Id: I2184084f4b7729c4324f8291d548bd4c4c2872a1

Change-Id: If77ee5aa9483d3ca03c52812f31665dee6468e99

Change-Id: Ic3e07b745b7b24cae0f772ea49e0de615b44caf9

I had missed that one

Change-Id: I9a5040a7a61e294396aa424de96a69dbb15f037a

Change-Id: Ie399ca7a9e76ccab44a92bc378d11f92392fed2c

...and go for the kill

Change-Id: I5ad57211b250d2578ca22a5dae93344d52f9da80

Also stop using Builder between its creation and the call to
the #build() method.

Change-Id: Ie1fc3ec7b6f4c7c3789f672f4e26b4bf58c3e062