Revert 221427 "Add instrumentation to the MessagePumpMac family ..."

This code is no longer needed, since the experiment is not viable.

> Add instrumentation to the MessagePumpMac family of classes.
>
> This adds UMA-uploaded histograms of sampling intervals for key points of data:
> * Total time spent in a CFRunLoop
> * Total time waiting in CFRunLoop
> * Total time servicing MessagePump::Delegate (the MessageLoop)
> * The MessageLoop queue size and queueing delay before servicing
>
> It adds 1 second sampling for 15 seconds at startup, only for the main thread
> (NSApplication-based) run loops.
>
> The data will be used to determine if adding scheduling-like behavior to the
> MessagePump will result in more efficient processing of the MessageLoop work.
>
> An unforunate side effect of this change is exposing another method on the
> MessagePump::Delegate interface, but there does not appear to be a better way
> to do this.
>
> BUG=264886
> R=jar@chromium.org, mark@chromium.org
>
> Review URL: https://codereview.chromium.org/22911026

TBR=rsesek@chromium.org

Review URL: https://codereview.chromium.org/360373004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@280939 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 2 deletions

diff --git a/base/message_loop/message_loop.h b/base/message_loop/message_loop.h
index 22d4f73..a65fbf5 100644
--- a/base/message_loop/message_loop.h
+++ b/base/message_loop/message_loop.h
@@ -446,8 +446,6 @@ class BASE_EXPORT MessageLoop : public MessagePump::Delegate {
   virtual bool DoWork() OVERRIDE;
   virtual bool DoDelayedWork(TimeTicks* next_delayed_work_time) OVERRIDE;
   virtual bool DoIdleWork() OVERRIDE;
-  virtual void GetQueueingInformation(size_t* queue_size,
-                                      TimeDelta* queueing_delay) OVERRIDE;
 
   const Type type_;