Add some network stuff (background downloader, URL splitter)

thread/prioritizedworkqueue.cpp

@@ -1,16 +1,8 @@
-#include <functional>
-
+#include "base/functional.h"
 #include "base/logging.h"
 #include "thread/thread.h"
 #include "thread/prioritizedworkqueue.h"
 
-#if defined(IOS) || defined(MACGNUSTD)
-#include <tr1/functional>
-namespace std {
-	using tr1::bind;
-}
-#endif
-
 PrioritizedWorkQueue::~PrioritizedWorkQueue() {
 	if (!done_) {
 		ELOG("PrioritizedWorkQueue destroyed but not done!");