This CL adds "Work profile" section to Languages and input settings.
The new section is visible when and only when work profile is enabled.
Hence there should be no user-visible behavior difference when work
profile is not enabled.
If per-profile IME [1] is also enabled, the following 3 preferences
will be shown in the new section.
* Virtual keyboard for work
* Spell checker for work
* Personal dictionary for work
[1]: Ied99664d3dc61b97c919b220c601f90b29761b96
a878b9500e6b89dce9738179edc27bcd0d736b7e
Fix: 120748696
Test: Manually verified as follows.
1. Build and flash an AOSP build
2. adb root
3. adb shell setprop persist.debug.per_profile_ime 1
4. adb reboot
5. Install Test DPC
6. Enable managed profile with Test DPC
7. tapas SoftKeyboard && make -j
8. adb install -r --user 0 $OUT/system/app/SoftKeyboard/SoftKeyboard.apk
9. tapas SampleSpellCheckerService && make -j
10. adb install -r --user 0 \
$OUT/system/app/SampleSpellCheckerService/SampleSpellCheckerService.apk
11. Open Settings -> System -> Languages & input
12. Virtual Keyboard -> Manage keyboards:
Make sure both "Android Keyboard" and "Sample Soft Keyboard" are shown.
13. Spell checker -> Default spell checker
Make sure "Android Spell Checker" and "Sample correction" are shown.
14. Advanced -> Virtual Keyboard for Work -> Manage keyboards
Make sure that only "Android Keyboard" is shown.
15. Advanced -> Spell checker -> Default spell checker
Make sure that only "Android Spell Checker" is shown.
Change-Id: Id88928318ab1cd92963d652ae39ca772222ea4ac
bcb87f7492