Adding the ability to use a simulated clock for unit tests.

webrtc/base/messagequeue.h

Index: webrtc/base/messagequeue.h
diff --git a/webrtc/base/messagequeue.h b/webrtc/base/messagequeue.h
index efc479cf2644243d8abff92dcfe414e43055d97b..f36d9d0e698dc762b2cb7e230d47bb570b466b09 100644
--- a/webrtc/base/messagequeue.h
+++ b/webrtc/base/messagequeue.h
@@ -49,6 +49,11 @@ class MessageQueueManager {
   // MessageQueueManager instance when necessary.
   static bool IsInitialized();
 
+  // Mainly for testing purposes, for use with a simulated clock.
+  // Posts a no-op event on all message queues so they will wake from the
+  // socket server select() and process messages again.
+  static void WakeAllMessageQueues();
+
  private:
   static MessageQueueManager* Instance();
 
@@ -58,6 +63,7 @@ class MessageQueueManager {
   void AddInternal(MessageQueue *message_queue);
   void RemoveInternal(MessageQueue *message_queue);
   void ClearInternal(MessageHandler *handler);
+  void WakeAllMessageQueuesInternal();
 
   static MessageQueueManager* instance_;
   // This list contains all live MessageQueues.