Reland: Add GCMChannelStatusSyncer to schedule requests and enable/disable GCM

chrome/browser/prefs/browser_prefs.cc

Index: chrome/browser/prefs/browser_prefs.cc
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 3d27e95d20b471c124d4cd38ad43e5683bf3e516..4992da832b831b0e82d74ab6c24f1d2463ad3210 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -82,6 +82,7 @@
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/bookmarks/browser/bookmark_utils.h"
 #include "components/dom_distiller/core/distilled_page_prefs.h"
+#include "components/gcm_driver/gcm_channel_status_syncer.h"
 #include "components/google/core/browser/google_pref_names.h"
 #include "components/google/core/browser/google_url_tracker.h"
 #include "components/network_time/network_time_tracker.h"
@@ -293,6 +294,8 @@ void RegisterLocalState(PrefRegistrySimple* registry) {
   AutomaticProfileResetterFactory::RegisterPrefs(registry);
   BackgroundModeManager::RegisterPrefs(registry);
   RegisterBrowserPrefs(registry);
+  // The native GCM is used on Android instead.
+  gcm::GCMChannelStatusSyncer::RegisterPrefs(registry);
 #if !defined(OS_CHROMEOS)
   RegisterDefaultBrowserPromptPrefs(registry);
 #endif  // !defined(OS_CHROMEOS)
@@ -443,6 +446,7 @@ void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   extensions::ExtensionSettingsHandler::RegisterProfilePrefs(registry);
   extensions::TabsCaptureVisibleTabFunction::RegisterProfilePrefs(registry);
   first_run::RegisterProfilePrefs(registry);
+  gcm::GCMChannelStatusSyncer::RegisterProfilePrefs(registry);
   NewTabUI::RegisterProfilePrefs(registry);
   PepperFlashSettingsManager::RegisterProfilePrefs(registry);
   PinnedTabCodec::RegisterProfilePrefs(registry);