Clean up usage of FileLog, and some logging related to B&R

Bug: 378684472
Test: N/A just logs
Flag: EXEMPT just logs
Change-Id: Ie2de7b700862b1439adc0c44d684b3864469014a
diff --git a/src/com/android/launcher3/SecondaryDropTarget.java b/src/com/android/launcher3/SecondaryDropTarget.java
index b3cb948..f4d3146 100644
--- a/src/com/android/launcher3/SecondaryDropTarget.java
+++ b/src/com/android/launcher3/SecondaryDropTarget.java
@@ -303,10 +303,11 @@
                     .setData(Uri.fromParts("package", cn.getPackageName(), cn.getClassName()))
                     .putExtra(Intent.EXTRA_USER, info.user);
             context.startActivity(i);
-            FileLog.d(TAG, "start uninstall activity " + cn.getPackageName());
+            FileLog.d(TAG, "start uninstall activity from drop target " + cn.getPackageName());
             return cn;
         } catch (URISyntaxException e) {
-            Log.e(TAG, "Failed to parse intent to start uninstall activity for item=" + info);
+            Log.e(TAG, "Failed to parse intent to start drop target uninstall activity for"
+                    + " item=" + info);
             return null;
         }
     }