[CrOS Tether] Remove spammy log from Initializer.

chromeos/components/tether/initializer.h

Index: chromeos/components/tether/initializer.h
diff --git a/chromeos/components/tether/initializer.h b/chromeos/components/tether/initializer.h
index db1449f8c35e08e8140cdd8b36b58f0123592c3c..a1b69446d5ed40d5baac6383035ac83a15455b46 100644
--- a/chromeos/components/tether/initializer.h
+++ b/chromeos/components/tether/initializer.h
@@ -56,7 +56,8 @@ class WifiHotspotConnector;
 // Initializes the Tether Chrome OS component.
 class Initializer : public OAuth2TokenService::Observer {
  public:
-  // Initializes the tether feature.
+  // Initializes the tether feature. If the feature has already been
+  // initialized, this function is a no-op.
   static void Init(
       cryptauth::CryptAuthService* cryptauth_service,
       std::unique_ptr<NotificationPresenter> notification_presenter,