With this CL, EditTextVariations is able to send Direct Repply
notification so that we can easily test IME behaviors there.
You don't need to set up a chat application then let it receive a
message from someone else any more just to test IME behaviors on
Direct Reply.
Fix: 122957841
Test: manually done as follows.
1. tapas EditTextVariations
2. make -j
3. adb install -r \
$ANDROID_TARGET_OUT_TESTCASES/EditTextVariations/EditTextVariations.apk
4. Open EditTextVariations
5. Tap the menu icon.
6. Select "Direct Reply"
7. Make sure that there is a Direct Reply notification.
Change-Id: Iafffcc7d138b0f502116a5e557f0c3f17e9d0b73
da2486fd63