Delete bugreport file on bugreport cancel

Note: bugreport Cancel is not the same as bugreport onError. Files are not
deleted onError, as it still has some information before the bugreport
crashed/stopped. Bugreport Cancel is triggered by the user, hence clean
up all the files.

Bug: 146994281
Test: Cancel interactive bugreport from UI, deletes the current
bugreport files

Change-Id: I2606e491cbaa20eaa60980e98af56a194bae2280

packages/Shell/src/com/android/shell/BugreportProgressService.java

@@ -817,6 +817,7 @@ public class BugreportProgressService extends Service {
                 Log.i(TAG, "Cancelling bugreport service (ID=" + id + ") on user's request");
                 mBugreportManager.cancelBugreport();
                 info.deleteScreenshots();
+                info.deleteBugreportFile();
             }
             stopProgressLocked(id);
         }
@@ -1967,6 +1968,14 @@ public class BugreportProgressService extends Service {
             }
         }
 
+        /**
+         * Deletes bugreport file for a given bugreport.
+         */
+        private void deleteBugreportFile() {
+            Log.i(TAG, "Deleting bugreport file " + bugreportFile);
+            bugreportFile.delete();
+        }
+
         /**
          * Rename all screenshots files so that they contain the new {@code name} instead of the
          * {@code initialName} if user has changed it.