Merge "Add Teamfood flag enabling Predictive Back at runtime." into tm-qpr-dev

packages/SystemUI/src/com/android/systemui/flags/Flags.kt

@@ -368,6 +368,11 @@ object Flags {
     @JvmField
     val NEW_BACK_AFFORDANCE = unreleasedFlag(1203, "new_back_affordance", teamfood = false)
 
+    // TODO(b/255854141): Tracking Bug
+    @JvmField
+    val WM_ENABLE_PREDICTIVE_BACK_SYSUI =
+        unreleasedFlag(1204, "persist.wm.debug.predictive_back_sysui_enable", teamfood = false)
+
     // 1300 - screenshots
     // TODO(b/254512719): Tracking Bug
     @JvmField val SCREENSHOT_REQUEST_PROCESSOR = releasedFlag(1300, "screenshot_request_processor")

packages/SystemUI/src/com/android/systemui/statusbar/phone/CentralSurfacesImpl.java

@@ -994,6 +994,11 @@ public class CentralSurfacesImpl implements CoreStartable, CentralSurfaces {
         // Lastly, call to the icon policy to install/update all the icons.
         mIconPolicy.init();
 
+        // Based on teamfood flag, turn predictive back dispatch on at runtime.
+        if (mFeatureFlags.isEnabled(Flags.WM_ENABLE_PREDICTIVE_BACK_SYSUI)) {
+            mContext.getApplicationInfo().setEnableOnBackInvokedCallback(true);
+        }
+
         mKeyguardStateController.addCallback(new KeyguardStateController.Callback() {
             @Override
             public void onUnlockedChanged() {