Replace base::Callback with base::OnceCallback in base::PendingTask

base/pending_task.h

Index: base/pending_task.h
diff --git a/base/pending_task.h b/base/pending_task.h
index 5761653397e0e5d011522f56e786fa1cbbbcc373..0ca10e80756f9bd8fa4ae368482265c717dc6fb0 100644
--- a/base/pending_task.h
+++ b/base/pending_task.h
@@ -15,13 +15,14 @@
 
 namespace base {
 
+using internal::OnceClosure;

[fdoray, 2016/10/06 17:37:22]

Avoid using "using" in a header file.

[tzik, 2016/10/13 05:58:04]

Removed. This is no longer needed after I moved it out from the internal
namespace.

+
 // Contains data about a pending task. Stored in TaskQueue and DelayedTaskQueue
 // for use by classes that queue and execute tasks.
 struct BASE_EXPORT PendingTask : public TrackingInfo {
+  PendingTask(const tracked_objects::Location& posted_from, OnceClosure task);
   PendingTask(const tracked_objects::Location& posted_from,
-              Closure task);
-  PendingTask(const tracked_objects::Location& posted_from,
-              Closure task,
+              OnceClosure task,
               TimeTicks delayed_run_time,
               bool nestable);
   PendingTask(PendingTask&& other);
@@ -33,7 +34,7 @@ struct BASE_EXPORT PendingTask : public TrackingInfo {
   bool operator<(const PendingTask& other) const;
 
   // The task to run.
-  Closure task;
+  OnceClosure task;
 
   // The site this PendingTask was posted from.
   tracked_objects::Location posted_from;