Enrich the dictionary with many words generated from stems
extracted from the dictionary and rules written by hand.
This adds 45,619 words to the dictionary. Hopefully, almost none
of them is incorrect, though a lot are not very common.

Bug: 8010862
Change-Id: I51c7ebd16ff859ec1e765b0604dd1cfca159ab08

Change-Id: I2cba2bb5b2f449ed29895365b9c6ca285a7640fe

KeyboardAccessibilityDelegate.synthesizeTouchEvent() wrongly passed
pointer's id as a 6th argument of MotionEvent.obtain method that
should be metaState.

Change-Id: I822f9647a1ba27ee8cee39f373f6a1c003ebf665

Change-Id: I913ec290ddfd0ae4cc6e600ba95b7442167f0989

Change-Id: I0ef983f54e828193e9c7e4a10c888f72702d499c

Change-Id: I4cbae476d16723778b46ff765dd97832f279785f

Bug: 14602663
Change-Id: Ie2060931df911b44230d5a5ba268f687cbdd0dc8

Bug: 12491371
Change-Id: I1f7feef707b95e8862db71cbc4f6f5585a2441dd

Bug: 13336905
Change-Id: Iefd117fa7b30b8ba240590b13b03d7044fd37ede

Bug: 12491371
Change-Id: Ib7ca91ae73aa40e45ea5f6d4e53348a261a4b823

Bug: 12491371
Change-Id: I3ce1e6557e41a94146b882751f75ae4b5f6bc73d

Bug: 15321822
Change-Id: Iab7cef83ffdf91c877c3ed2e59d412496b516e1c

Bug: 15310025
Change-Id: I20bde50a2e751a5cd9871debd5ed1df0334c78e2

This fixes PunctuationTests#
testAutoCorrectionWithSingleQuotesAround.

Bug: 14119293
Bug: 15334309

Change-Id: I604c21a21e89a5fc431fd56ab7b6ad03f4736b01

Bug: 15295839
Change-Id: I77206c88c38a31193db97ce42c9d00fc25c7ff58

Bug: 15298065
Bug: 15327280
Change-Id: I4dfade1afe3578e29daba777567f81d4ec782956

This CL does't fix Bug: 15321822 though.

Bug: 15298065
Bug: 15321822
Change-Id: Ie6ab1e230c1657317dc06193da598f04f682f521

At 100k text, it's reasonably fast (less than 1s on latest hardware).

Bug: 12913404
Change-Id: I426b918b2610af24364934a1c37a7314f1142ad0

Bug: 15321822
Change-Id: I6a5a865364fb98e0ebb6206d80d5629bbcb817b8

Bug: 15295839
Change-Id: Ia4af33b00bf361d088981df907468b4a61c1a076

This CL must be checked in together with Ie52007dc5c.

Bug: 15318007
Change-Id: Ie665f296e43b5485ae8ba7e949aa262794ee0dcc

This reverts commit d941ea18 and builds on it to fix the behavior
of the broken cases.
It also fixes a small, related bug that probably has existed for
a very long time: predictions not displayed when cancelling
double-space-to-period.

Bug: 15148015
Change-Id: I1f9358f8b6f5804f831643611576be347e83999d

Bug: 15320560
Change-Id: Icb88a96ebd685da1d2cba7b07889a2751c603a2e

This CL must be checked in together with I5cc76807e3.

Bug: 15318007
Change-Id: I61423c3377ddc299fb332e742d6626c2e47145bb

Bug: 15298959
Change-Id: I6921db77b7d231ad3aad99d4c380ae2ed6bbf540

Change-Id: Ifd7419b2fda706b5035060348ed63d894f843a2e
Auto-generated-cl: translation import

Change-Id: Ib6d03976824f13a9932473c440b476f950f92ef7
Auto-generated-cl: translation import

Change-Id: If37d804345c2a1611af5019c36b0cf6c21e04c0e
Auto-generated-cl: translation import

Bug: 15298959

Change-Id: Iba6eeb7981634e7ddb896404978b30f6efd6e72f

Bug: 15298065
Change-Id: Id5cd6c989ac1e64389f060f692b578a2ceec0db8

Bug: 15295910
Change-Id: I37d8c184ab500f4b4ffa57a6abe5516cb671ce29

This CL also use an action key background for the emoji key only on
phone becase the emoji key share the same position with other action
keys. The emoji key on tablet keeps using the functional key
background.

Bug: 15296851
Change-Id: I7b8550c61f19548f463a782342bdc0f496433a2a

This CL must be checked in together with I6fd87e1eec.

Change-Id: I4b24157f3e3ce6327579d37122a34d7a30069885

This CL also adds visual feedback of hovering key in accessibility
mode.

Bug: 12491371
Change-Id: I7b1f28a2e421ca60b2738ed94e7bdb406f75039b

Bug: 12491371
Change-Id: I2c2c6f3a6d0d7e7efbe0253127f5b9117cbc512d

Bug: 12184250
Change-Id: Iee7e00c1e84c95551a077f4dd023c0a9b9ac9466

Bug: 13142176
Change-Id: I0290df918a5bd5018bf55231dc462d5e797155c6

Bug: 15270123
Change-Id: I655ba97f0543476980d0e8461bc1c8a56c9f954b

Change-Id: Idae3e89f0398ab2cd56985adfac18959aa1852e7

Change-Id: I3b5bc630bf73a357ed0beeec0b555149ef248313