remove rollback to xmpp when GCM disabled

chrome/browser/invalidation/ticl_profile_settings_provider.cc

Index: chrome/browser/invalidation/ticl_profile_settings_provider.cc
diff --git a/chrome/browser/invalidation/ticl_profile_settings_provider.cc b/chrome/browser/invalidation/ticl_profile_settings_provider.cc
index 6b2292c9f8eef8fe7e83f4b932c9b60d64245dde..67e3235f991b89f69d435d0e644eab67ead5738c 100644
--- a/chrome/browser/invalidation/ticl_profile_settings_provider.cc
+++ b/chrome/browser/invalidation/ticl_profile_settings_provider.cc
@@ -33,11 +33,6 @@ TiclProfileSettingsProvider::~TiclProfileSettingsProvider() {
 }
 
 bool TiclProfileSettingsProvider::UseGCMChannel() const {
-  if (!gcm::GCMProfileService::IsGCMEnabled(profile_)) {
-    // Do not try to use GCM channel if GCM is disabled.
-    return false;
-  }
-
   if (profile_->GetPrefs()->GetBoolean(
           prefs::kInvalidationServiceUseGCMChannel)) {
     // Use GCM channel if it was enabled via prefs.