This CL a logical revert of a previous CL [1], which separated Java
files into common ones and overridable ones.  Now that that overriding
concept is no longer used, there is no need to keep having separate
directory structure.

 [1]: Ic734bd4d20aa050c688a3158b1a382ae0ac18991
      fb74ab15

Fix: 79323502
Test: make -j aosp_taimen-userdebug && make -j
Test: tapas LatinIME && make -j
Change-Id: I2090bc25d18e6d4f24e91c2cbfe832755cbb4e8f

Bug 19625976.

Change-Id: I6d8b0d2b0a77ccda1bfc914501cf568b92862980

Change-Id: Ibd42982996a36ac52b4c916035491b835f8d14f9

Pass dictionaryFacilitator to StatsUtilsManager from
LatinIME
Bug:16553957

Change-Id: I912a0b447e5684909ff67e3653a4bd8649cd03c5

Change corresponding to ag/605384

Bug:16553957

Change-Id: I77024957b9497c45296bbbb24ca972b26348a8c3

This CL also adds @SuppressWarning("unused" to java-overridable package.

Bug: 18003991
Change-Id: If70527e30654384705d7a814f5efd181d9f539e1

Bug:15657192
Change-Id: I6e976202812d1c1675bd7822c4a15686d1ec1fe9

Bug:16522256
Change-Id: I9cb8129c552159cf17ea5c2656e0988bf0f999f5

Change-Id: I61e32c7a455a273e8daf9a5487d7969923802488
Bug: 17013677

This should make IDEs happy with appropriate source code directory
selection.

Change-Id: Ic734bd4d20aa050c688a3158b1a382ae0ac18991
(cherry picked from commit fb74ab15)

This should make IDEs happy with appropriate source code directory
selection.

bug: 16829244
Change-Id: Ic734bd4d20aa050c688a3158b1a382ae0ac18991

With this CL, the implementation of StatsUtils no longer
needs to know how to read settings from the system.

Insted, the LatinIME class is now responsible for notifying
StatsUtils whenever the settings is changed.

BUG: 14324207
Change-Id: Ic3d26ec31c8d2c082d3e7487b578b323aad2f960

BUG: 11746191
Change-Id: I0b693c4b22793f6e8fd77a9f045f205aa8fe4050

BUG: 11746191
Change-Id: I0218dd07dde1d09321009ea1497258fc4235a1e8