Revert of Add network throttling as an enterprise policy

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index 04ecd165c5090ee2c9d086bd72bb65ff8748ceee..98b5799d9dbd1beb3c5f2cc4376e577b091a9547 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -61,7 +61,6 @@
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/chromeos/net/network_connect_delegate_chromeos.h"
 #include "chrome/browser/chromeos/net/network_portal_detector_impl.h"
-#include "chrome/browser/chromeos/net/network_throttling_observer.h"
 #include "chrome/browser/chromeos/net/wake_on_wifi_manager.h"
 #include "chrome/browser/chromeos/options/cert_library.h"
 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.h"
@@ -413,8 +412,6 @@ void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
   DeviceOAuth2TokenServiceFactory::Initialize();
 
   wake_on_wifi_manager_.reset(new WakeOnWifiManager());
-  network_throttling_observer_.reset(
-      new NetworkThrottlingObserver(g_browser_process->local_state()));
 
   arc_service_launcher_.reset(new arc::ArcServiceLauncher());
   arc_service_launcher_->Initialize();
@@ -803,7 +800,6 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopRun() {
   power_prefs_.reset();
   renderer_freezer_.reset();
   wake_on_wifi_manager_.reset();
-  network_throttling_observer_.reset();
   ScreenLocker::ShutDownClass();
   keyboard_event_rewriters_.reset();
   low_disk_notification_.reset();