Adding a debug feature flag for taskbar pinning.

Bug: 265307333
Test: cl

Change-Id: I95cea392924fb9dc2acff99cd97a5fb4ddc32fbc
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index daf83d4..5f9cfe1 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -385,6 +385,11 @@
             "ENABLE_MULTI_INSTANCE", false,
             "Enables creation and filtering of multiple task instances in overview");
 
+    public static final BooleanFlag ENABLE_TASKBAR_PINNING = getDebugFlag(
+            "ENABLE_TASKBAR_PINNING", false,
+            "Enables taskbar pinning to allow user to switch between transient and persistent "
+                    + "taskbar flavors");
+
     public static void initialize(Context context) {
         synchronized (sDebugFlags) {
             for (DebugFlag flag : sDebugFlags) {