Add TraySms for SMS messages.

chromeos/dbus/gsm_sms_client.cc

Index: chromeos/dbus/gsm_sms_client.cc
diff --git a/chromeos/dbus/gsm_sms_client.cc b/chromeos/dbus/gsm_sms_client.cc
index 566b262ece7b8ca9ef49a86933b11d050ab07f7d..42f8d4499c8cac9d9bcc27653c4a29e2ca76ecb2 100644
--- a/chromeos/dbus/gsm_sms_client.cc
+++ b/chromeos/dbus/gsm_sms_client.cc
@@ -277,21 +277,23 @@ class GsmSMSClientStubImpl : public GsmSMSClient {
   virtual void List(const std::string& service_name,
                     const dbus::ObjectPath& object_path,
                     const ListCallback& callback) OVERRIDE {
-    PushTestMessageChain();
     callback.Run(message_list_);
+    PushTestMessageDelayed();
   }
 
  private:
+  void PushTestMessageDelayed() {
+    const int kSmsMessageDelaySeconds = 5;
+    MessageLoop::current()->PostDelayedTask(
+        FROM_HERE,
+        base::Bind(&GsmSMSClientStubImpl::PushTestMessageChain,
+                   weak_ptr_factory_.GetWeakPtr()),
+        base::TimeDelta::FromSeconds(kSmsMessageDelaySeconds));
+  }
+
   void PushTestMessageChain() {
-    if (PushTestMessage()) {
-      // Queue up the next message.
-      const int kSmsMessageDelaySeconds = 5;
-      MessageLoop::current()->PostDelayedTask(
-          FROM_HERE,
-          base::Bind(&GsmSMSClientStubImpl::PushTestMessageChain,
-                     weak_ptr_factory_.GetWeakPtr()),
-          base::TimeDelta::FromSeconds(kSmsMessageDelaySeconds));
-    }
+    if (PushTestMessage())
+      PushTestMessageDelayed();
   }
 
   bool PushTestMessage() {