base::Bind: Remove Task.

base/message_loop_proxy.h

Index: base/message_loop_proxy.h
diff --git a/base/message_loop_proxy.h b/base/message_loop_proxy.h
index b6da5e4a35a73675dae02ad401faf766ff9eb52e..6220eb76793ba62b43fe1c83895c04f363e01a3b 100644
--- a/base/message_loop_proxy.h
+++ b/base/message_loop_proxy.h
@@ -33,33 +33,14 @@ class BASE_EXPORT MessageLoopProxy
                                         MessageLoopProxyTraits> {
  public:
   // These methods are the same as in message_loop.h, but are guaranteed to
-  // either post the Task to the MessageLoop (if it's still alive), or to
-  // delete the Task otherwise.
+  // either post the Task to the MessageLoop (if it's still alive), or the task
+  // is discarded.
   // They return true iff the thread existed and the task was posted.  Note that
   // even if the task is posted, there's no guarantee that it will run; for
   // example the target loop may already be quitting, or in the case of a
   // delayed task a Quit message may preempt it in the message loop queue.
   // Conversely, a return value of false is a guarantee the task will not run.
   virtual bool PostTask(const tracked_objects::Location& from_here,
-                        Task* task) = 0;
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               Task* task,
-                               int64 delay_ms) = 0;
-  virtual bool PostNonNestableTask(const tracked_objects::Location& from_here,
-                                   Task* task) = 0;
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      Task* task,
-      int64 delay_ms) = 0;
-
-  // TODO(ajwong): Remove the functions above once the Task -> Closure migration
-  // is complete.
-  //
-  // There are 2 sets of Post*Task functions, one which takes the older Task*
-  // function object representation, and one that takes the newer base::Closure.
-  // We have this overload to allow a staged transition between the two systems.
-  // Once the transition is done, the functions above should be deleted.
-  virtual bool PostTask(const tracked_objects::Location& from_here,
                         const base::Closure& task) = 0;
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const base::Closure& task,