[GCM] Make sure GCM checkout logic is invoked when the profile is signed out

chrome/browser/sync/profile_sync_service_factory.cc

Index: chrome/browser/sync/profile_sync_service_factory.cc
diff --git a/chrome/browser/sync/profile_sync_service_factory.cc b/chrome/browser/sync/profile_sync_service_factory.cc
index 6e2f86948b7240654a83e8b7d62e5d1cbf1e18a3..421fa01356472c241688e8c5953027c7a6ba0e39 100644
--- a/chrome/browser/sync/profile_sync_service_factory.cc
+++ b/chrome/browser/sync/profile_sync_service_factory.cc
@@ -95,16 +95,10 @@ BrowserContextKeyedService* ProfileSyncServiceFactory::BuildServiceInstanceFor(
 
   SigninManagerBase* signin = SigninManagerFactory::GetForProfile(profile);
 
-  // Automatically load the GCMProfileService if the enabled state has been
-  // explicitly set.
-  const base::Value* gcm_enabled_value =
-      profile->GetPrefs()->GetUserPrefValue(prefs::kGCMChannelEnabled);
-  bool gcm_enabled = false;
-  if (gcm_enabled_value &&
-      gcm_enabled_value->GetAsBoolean(&gcm_enabled) &&
-      gcm_enabled) {
-    gcm::GCMProfileServiceFactory::GetForProfile(profile);
-  }
+  // Always create the GCMProfileService instance such that we can listen to
+  // the profile notifications and purge the GCM store when the profile is
+  // being signed out.
+  gcm::GCMProfileServiceFactory::GetForProfile(profile);
 
   // TODO(atwilson): Change AboutSigninInternalsFactory to load on startup
   // once http://crbug.com/171406 has been fixed.