add logging for Launcher backup and restore events

Test: Manually verify logs
Bug: 294386159
Change-Id: Ic3a77f4a09556e0d769837129e0bd094f1e91b6b
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index be14844..e3de79e 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -50,6 +50,7 @@
 
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.DotRenderer;
+import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.DeviceGridState;
 import com.android.launcher3.provider.RestoreDbTask;
 import com.android.launcher3.testing.shared.ResourceUtils;
@@ -287,12 +288,13 @@
      * Reinitialize the current grid after a restore, where some grids might now be disabled.
      */
     public void reinitializeAfterRestore(Context context) {
+        FileLog.d(TAG, "Reinitializing grid after restore");
         String currentGridName = getCurrentGridName(context);
         String currentDbFile = dbFile;
         String newGridName = initGrid(context, currentGridName);
         String newDbFile = dbFile;
         if (!newDbFile.equals(currentDbFile)) {
-            Log.d(TAG, "Restored grid is disabled : " + currentGridName
+            FileLog.d(TAG, "Restored grid is disabled : " + currentGridName
                     + ", migrating to: " + newGridName
                     + ", removing all other grid db files");
             for (String gridDbFile : LauncherFiles.GRID_DB_FILES) {
@@ -300,7 +302,7 @@
                     continue;
                 }
                 if (context.getDatabasePath(gridDbFile).delete()) {
-                    Log.d(TAG, "Removed old grid db file: " + gridDbFile);
+                    FileLog.d(TAG, "Removed old grid db file: " + gridDbFile);
                 }
             }
             setCurrentGrid(context, newGridName);