Revert "Migrate ENABLE_GRID_ONLY_OVERVIEW to aconfig flag"

This reverts commit 6f264a927bd4bf37b0632063da8455d0597a4a61.

Reason for revert: Keeping old flag system so we can test in Tapl tests (b/283246928)
Bug: 270397206

Change-Id: I3e6364ebac8018facc3b22e510615735299a3dad
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index f61723a..94eb7a3 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -1761,7 +1761,7 @@
 
     /** Gets the space that the overview actions will take, including bottom margin. */
     public int getOverviewActionsClaimedSpace() {
-        int overviewActionsSpace = isTablet && Flags.enableGridOnlyOverview()
+        int overviewActionsSpace = isTablet && FeatureFlags.enableGridOnlyOverview()
                 ? 0
                 : (overviewActionsTopMarginPx + overviewActionsHeight);
         return overviewActionsSpace + getOverviewActionsClaimedSpaceBelow();
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 289a857..a3c434a 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -317,6 +317,16 @@
                     + "waiting for SystemUI and then merging the SystemUI progress whenever we "
                     + "start receiving the events");
 
+    // TODO(Block 23): Clean up flags
+    // Aconfig migration complete for ENABLE_GRID_ONLY_OVERVIEW.
+    @VisibleForTesting
+    public static final BooleanFlag ENABLE_GRID_ONLY_OVERVIEW = getDebugFlag(270397206,
+            "ENABLE_GRID_ONLY_OVERVIEW", TEAMFOOD,
+            "Enable a grid-only overview without a focused task.");
+    public static boolean enableGridOnlyOverview() {
+        return ENABLE_GRID_ONLY_OVERVIEW.get() || Flags.enableGridOnlyOverview();
+    }
+
     // Aconfig migration complete for ENABLE_OVERVIEW_ICON_MENU.
     @VisibleForTesting
     public static final BooleanFlag ENABLE_OVERVIEW_ICON_MENU = getDebugFlag(257950105,
diff --git a/src/com/android/launcher3/testing/TestInformationHandler.java b/src/com/android/launcher3/testing/TestInformationHandler.java
index e52e878..a75f326 100644
--- a/src/com/android/launcher3/testing/TestInformationHandler.java
+++ b/src/com/android/launcher3/testing/TestInformationHandler.java
@@ -16,7 +16,7 @@
 package com.android.launcher3.testing;
 
 import static com.android.launcher3.allapps.AllAppsStore.DEFER_UPDATES_TEST;
-import static com.android.launcher3.Flags.enableGridOnlyOverview;
+import static com.android.launcher3.config.FeatureFlags.enableGridOnlyOverview;
 import static com.android.launcher3.config.FeatureFlags.FOLDABLE_SINGLE_PAGE;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;