Migrate predictive back flags to aconfig

Bug: 309545085
Flag: ACONFIG com.android.systemui.predictive_back_sysui DISABLED
Flag: ACONFIG com.android.systemui.predictive_back_animate_shade DISABLED
Flag: ACONFIG com.android.systemui.shade_allow_back_gesture DISABLED
Flag: ACONFIG com.android.systemui.predictive_back_bouncer_anim DISABLED
Test: atest BackActionInteractorTest
Test: atest CentralSurfacesImplTest
Test: atest NotificationPanelViewControllerBaseTest
Test: atest StatusBarKeyguardViewManagerTest
Test: Manual, i.e. testing build on device and verifying behaviour of flagged features
Change-Id: I940233b69957819445cd3efb46ee598a3414e3e8
diff --git a/packages/SystemUI/aconfig/predictive_back.aconfig b/packages/SystemUI/aconfig/predictive_back.aconfig
new file mode 100644
index 0000000..1ad1666
--- /dev/null
+++ b/packages/SystemUI/aconfig/predictive_back.aconfig
@@ -0,0 +1,22 @@
+package: "com.android.systemui"
+
+flag {
+    name: "predictive_back_sysui"
+    namespace: "systemui"
+    description: "Predictive Back Dispatching for SysUI"
+    bug: "309545085"
+}
+
+flag {
+    name: "predictive_back_animate_shade"
+    namespace: "systemui"
+    description: "Enable Shade Animations"
+    bug: "309545085"
+}
+
+flag {
+    name: "predictive_back_animate_bouncer"
+    namespace: "systemui"
+    description: "Enable Predictive Back Animation in Bouncer"
+    bug: "309545085"
+}
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