Move the Mac Task Manager to the new backend code.

chrome/browser/ui/views/browser_dialogs_views.cc

Index: chrome/browser/ui/views/browser_dialogs_views.cc
diff --git a/chrome/browser/ui/views/browser_dialogs_views.cc b/chrome/browser/ui/views/browser_dialogs_views.cc
index aa157e16cccedca9d144cf030521c7a1e053b7cb..8444f7f960ccbe812b7cd55ef637ccec0782da24 100644
--- a/chrome/browser/ui/views/browser_dialogs_views.cc
+++ b/chrome/browser/ui/views/browser_dialogs_views.cc
@@ -64,11 +64,6 @@ void HideTaskManager() {
   task_management::NewTaskManagerView::Hide();
 }
 
-bool NotifyOldTaskManagerBytesRead(const net::URLRequest& request,
-                                   int64_t bytes_read) {
-  return false;
-}
-
 }  // namespace chrome
 
 #if defined(OS_CHROMEOS)