Change-Id: Ibdf97726008c1f94c970461196ba445ce328a8cb

The initial reloadTextCache() operation needs to read 1k characters, and it
could be slow on low-end devices. Also, the initial load is not blocking key
strokes, so it can take a little longer.

Bug 22062102.

Change-Id: I134424e8910c0d6131c311a862bdc87eccd3af44

1. Add mechanism to detect a slow or non-resonsive InputConnection (IC)
2. When IC slowness is detected, skip certain IC calls that are known
   to be expensive (e.g., getTextAfterCursor).
3. Similarly, disables learning / unlearning on a slow IC.
4. IC slowness flag is reset when starting input on a new TextView or
   when a fixed amount of time has passed.

Note: These are mostly temporary workarounds. The permanent solution is
to refactor RichInputConnection so that it is less sensitive to IC
slowness in general.

Bug: 21926256
Change-Id: I383fab0516d3f3a8e0f71e5d760a8336a7730f7c

Users rarely tap on committed words, and the cost of sending the spans back
through the input connection, back and forth to the target app, is too high.

Bug 21926256.

Change-Id: I8e55b57ce2148ed313dc927425b6d9c958634958

This is causing issues we can't deal with in a safe and timely manner.
Furthermore, users who need downloaded dictionaries already have them by now.

Bug 21797386.

Change-Id: I97e5fd84edcf2b16f04db57b7ae4a13fa9ce993f

Bug: 21797386
Change-Id: Ic09698b28e31b4f16831898d7cb08853f4e5df4a

Also adds a hook to log using StatsUtils.
Proto change is coming in a separate CL.

Bug 22010482.

Change-Id: I08065fc7a5cd116e50ff84cb14bbbc44c4f14bc7

Bug: 21797386
Change-Id: I60f50a2fe890af46f5e847c34df2edf719d40ac4

Change-Id: I25263fe227ae88afa2021454b0dac2b0c7b9bfe0

We never delete text after the cursor, so constrain the API accordingly.
Define the number of characters to read before and after.
Set them to reasonable values.
The next CL will start caching text after the cursor.

Bug 21926256.

Change-Id: Idd58daf68614de4a69344aa3c8a4323720c5d3a0

Bug 21900337.

Change-Id: I82991b492ea4c02a28a1ccc898d6f12741f1b793

This reverts commit 76de0a8f.

Bug 21881199.

Change-Id: I53f42a1e8f25d214de97264f4d25813bc637cafa

Bug: 21797386
Change-Id: Iebe9d2f18c5c8325a5601d49d8c4c65166b67036

Bug 19774872.

Change-Id: Icd790414d9462ee74a7eac11dd255fddf3048dce

Change-Id: I1d7ebe5962fc3176c376e1ce34c7ac98cdf41373

Bug 21272977.

Change-Id: Id561040c29a7f2576cd9ef0514c31751a4360ef8

Bug: 20103664
Change-Id: Iba019d5f79f46c560171e0594c2b5114b477923a

Change-Id: I2ca37bd691abcc036ead8071045d37d72b2d088d

Bug 20103664.

Change-Id: I1e2b72979df148d8aa71e3e58437a5853e63c261

Note: this doesn't mean that sync would happen.
It only unblocks users who are already opted into
cloud sync

Change-Id: I91836efadac89d0429d7f2e9c9190a873a638743

Bug 20701628.

Change-Id: Ifba1e7dd7f9934c8c13279dfb95bf02c0e30e650

Bug 20701628.

Change-Id: I4de89587776a0859aeda5d2ed76ab1eb4f918458

Bug: 20641948
Change-Id: I6639c995b12c033bc30241cd219201dd483ee516

Bug 20733902.

Change-Id: Ibe27e6cafe4db87ba62d7df708229e0d8564ffa8

Bug: 20681528
Change-Id: I80e7095b70a151f3ccc36856d7e0837613a35972

Bug: 20681528
Change-Id: I80e7095b70a151f3ccc36856d7e0837613a35972

We want to let the facilitator decide if a word is valid or invalid, and cache
the answer in the facilitator's cache. The spell checker session doesn't need
its own word cache, except as a crutch to communicate suggestions to the code
that populates the suggestion drop-down. We leave that in place.

Bug 20018546.

Change-Id: I3c3c53e0c1d709fa2f64a2952a232acd7380b57a

Bug: 20544640
Change-Id: I6e2a26a8a5e43360dfefcc85bb46eae28f5e3867

Bug 20526371.

Change-Id: If53a81f925fbb1b29ad945ba0ec2192d92ae1eff

Bug: 20307420
Change-Id: I95969de40936d2ea992669324d0c4df7e8de2bd9

Confusingly, specifying a null Locale object to the constructor
of SuggestionSpan does not necessarily mean that
SuggestionSpan#getLocale() returns null.  The constructor in
question also receives Context object, and Context's locale can
be used as a fallback locale to initialize locale of
SuggestionSpan.

With this CL, LatinIME always specify non-null Locale object
when instantiating SuggestionSpan object.  It basically
corresponds to the active main dictionary, but can be
Locale#ROOT when one locale is not determined for some reasons.

BUG: 20435013
Change-Id: I2c152466410327300e7dba4d7ed9a22f57c17c4f

Change-Id: Iaf84a9a1f00b31daf7225991c4cfc5f17b578028

This allows us to:
1. Rank contacts and only add the top N names to the keyboard LM.
2. Avoid adding duplicate names.

Note: The affinity calcualuation is limited by the fact that some apps
currently do not update the TIMES_CONTACTED counter. To better handle
this case, the new measure also takes into account whether or not a
name is in the visible contacts group.

Bug: 20053274
Change-Id: I2741cb8958667d4a294aba8c437a45cec4b42dc7

Bug: 20142633

Change-Id: Ia0f3661ac3028473c00f83df72dcb9e1fd134247

Does the following
1. Uses dictionaries from the files/ directory while populating the
   entries into the pendingUpdates table. So that a download happens only
   if the metadata.json says so.
2. Delete an unusable dictionaries from the files/ directory.

Bug: 20142708
Change-Id: Ibd738793585c39735868e324b8ad682dff0eba34

Bug: 20150386
Change-Id: I2ed69aba7b1fdaba1e2ac07b8218a265dfe23e09

The raw strings would be sent to personal LM for decoding.
Earlier lowercased strings were being used with the purpose
of isValid checks (spelling does not consider casing for spell
checking calls). But for showing these in suggestion, we need the
raw strings.

Note: PersonalDictionaryLookup#getWordsForLocale is used to feed
the personal LM in PersonalLanguageModelHelper.

Bug:20152986
Change-Id: I9d796fa57bf2073036bf11d86b143ff205a6199c

Bug 20043003.

Change-Id: I5ccac344c089855474263d1cdc547da1e6779301

Use LOOKBACK_CHARACTER_NUM = 80 instead of the previous
EDITOR_CONTENTS_CACHE_SIZE = 1024 (which was overkill).

This speeds up many InputLogic operations.

Bug: 19987461
Change-Id: I62b6a589f87e5daab33376b3e48f1c615a66dcfb

Bug 19987461.

Change-Id: Ibf58f2b26c2d01f765ef32abb47c84be49e2ba9f