This is a follow up CL to my previous CL [1], which used the following
conditions to determine when to let the IME render the back and IME
switcher buttons.
* InputMethodService#canImeRenderGesturalNavButtons(), and
* com.android.internal.R.integer.config_navBarInteractionMode == 2
In production, there may be cases when we want to use the previous
mode even if config_navBarInteractionMode remains to be 2. As a
preparation to support such scenarios, this CL introduces
config_navBarInteractionMode
as an overlayable resource. In subsequent CLs, we will start actually
using it.
Anyway there should be no observable behavior change in this CL.
[1]: I3e7e1f83554444131e2765dc159617bb9e2337c7
ff7b453ca8e23b4ef75ba2c3f5becaf511cb07d3
Bug: 216118048
Test: Manually verified as follows
1. Build aosp_coral-userdebug and flash it
2. adb shell cmd overlay lookup android android:bool/config_imeDrawsImeNavBar
=> "false"
3. Enable gestural navigation
4. adb shell cmd overlay lookup android android:bool/config_imeDrawsImeNavBar
=> "true"
Change-Id: I0651a99b6007a84be63b85b579a85af0f24bb6ec
b89cbc6f05