Fix a queue for FSP API.

chrome/browser/chromeos/file_system_provider/queue.cc

Index: chrome/browser/chromeos/file_system_provider/queue.cc
diff --git a/chrome/browser/chromeos/file_system_provider/queue.cc b/chrome/browser/chromeos/file_system_provider/queue.cc
index 96cbad4880bea2aaa571eef812eb74d79eb03322..4c3ebe8aae6efeca8f65d98d10d7c07f9fe80f99 100644
--- a/chrome/browser/chromeos/file_system_provider/queue.cc
+++ b/chrome/browser/chromeos/file_system_provider/queue.cc
@@ -75,11 +75,12 @@ void Queue::Remove(size_t token) {
 }
 
 void Queue::MaybeRun() {
-  if (executed_.size() == max_in_parallel_ || !pending_.size()) {
+  if (executed_.size() + completed_.size() == max_in_parallel_ ||
+      !pending_.size()) {
     return;
   }
 
-  DCHECK_GT(max_in_parallel_, executed_.size());
+  DCHECK_GT(max_in_parallel_, executed_.size() + completed_.size());
   Task task = pending_.front();
   pending_.pop_front();