This CL introduces a sample AccessibilityService that demonstrates how
to use newly added APIs based on IME APIs [1].
[1]: Ia651a811093a939d00c081be1961e24ed3ad0356
fb17e5ae7a9e1a095d114d8dde76f14578b6c233
Fix: 223671031
Test: Manually done as follows.
1. make -j SampleInputMethodAccessibilityService
2. adb install -r $OUT/system/app/SampleInputMethodAccessibilityService/SampleInputMethodAccessibilityService.apk
3. adb shell settings put secure enabled_accessibility_services com.example.android.sampleinputmethodaccessibilityservice/com.example.android.sampleinputmethodaccessibilityservice.SampleInputMethodAccessibilityService
Change-Id: Iea75f4378118fadc142c56aad7667784111033ba
Adding a new folder in development/samples is not enough to have it
be packaged with the SDK.
Make sure to edit development/build/sdk.atree to add the sample to the SDK
build.
4ee7f80302