Move the Mac Task Manager to the new backend code.

chrome/browser/task_management/task_manager_interface.cc

Index: chrome/browser/task_management/task_manager_interface.cc
diff --git a/chrome/browser/task_management/task_manager_interface.cc b/chrome/browser/task_management/task_manager_interface.cc
index c0b79f5e8d083a6c1a2a29df372a160a6279fe68..3ce896269ab91a5e9511e5066f92f78b57df7c28 100644
--- a/chrome/browser/task_management/task_manager_interface.cc
+++ b/chrome/browser/task_management/task_manager_interface.cc
@@ -32,13 +32,6 @@ bool TaskManagerInterface::IsEndProcessEnabled() {
   return !state || state->GetBoolean(prefs::kTaskManagerEndProcessEnabled);
 }
 
-#if defined(OS_MACOSX)
-// static
-bool TaskManagerInterface::IsNewTaskManagerEnabled() {
-  return chrome::ToolkitViewsDialogsEnabled();
-}
-#endif  // defined(OS_MACOSX)
-
 // static
 TaskManagerInterface* TaskManagerInterface::GetTaskManager() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
@@ -51,11 +44,6 @@ void TaskManagerInterface::OnRawBytesRead(const net::URLRequest& request,
                                           int64_t bytes_read) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
 
-#if defined(OS_MACOSX)
-  if (chrome::NotifyOldTaskManagerBytesRead(request, bytes_read))
-    return;
-#endif  // defined(OS_MACOSX)
-
   TaskManagerIoThreadHelper::OnRawBytesRead(request, bytes_read);
 }