Pass Callback to TaskRunner by value and consume it on invocation (1)

base/message_loop/incoming_task_queue.h

Index: base/message_loop/incoming_task_queue.h
diff --git a/base/message_loop/incoming_task_queue.h b/base/message_loop/incoming_task_queue.h
index 157e47fa14b682286862d55f266d7371e153ad85..a912dc2ee15f01362403faf44822096d4d0c8ae4 100644
--- a/base/message_loop/incoming_task_queue.h
+++ b/base/message_loop/incoming_task_queue.h
@@ -6,6 +6,7 @@
 #define BASE_MESSAGE_LOOP_INCOMING_TASK_QUEUE_H_
 
 #include "base/base_export.h"
+#include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/pending_task.h"
@@ -35,7 +36,7 @@ class BASE_EXPORT IncomingTaskQueue
   // returns false. In all cases, the ownership of |task| is transferred to the
   // called method.
   bool AddToIncomingQueue(const tracked_objects::Location& from_here,
-                          const Closure& task,
+                          Closure task,
                           TimeDelta delay,
                           bool nestable);