Fix aborting in throttled file system (FSP).

chrome/browser/chromeos/file_system_provider/queue.h

Index: chrome/browser/chromeos/file_system_provider/queue.h
diff --git a/chrome/browser/chromeos/file_system_provider/queue.h b/chrome/browser/chromeos/file_system_provider/queue.h
index 7eca4f96dba929d3d794d4d0d92b1a7a1ec71ca0..559dcd655cfcfadf1273abf8930fb3faacf59da2 100644
--- a/chrome/browser/chromeos/file_system_provider/queue.h
+++ b/chrome/browser/chromeos/file_system_provider/queue.h
@@ -63,6 +63,11 @@ class Queue {
   // abort callback is NULL).
   void Abort(size_t token);
 
+  // Returns true if the task which is in the queue with |token| has been
+  // aborted. This method must not be called for tasks which are not in the
+  // queue.
+  bool IsAborted(size_t token);
+
   // Marks the previously enqueued task as complete. Must be called for each
   // enqueued task (unless aborted). Note, that Remove() must be called in order
   // to remove the task from the queue if it hasn't been aborted earlier.