Reduce chrome cras dbus call logs during device rebooting.

chromeos/dbus/session_manager_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DBUS_SESSION_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_SESSION_MANAGER_CLIENT_H_
 
 #include <map>
 #include <string>
 
@@ skipping 24 matching lines @@
     virtual void LockScreen() {}
 
     // Called when the session manager announces that the screen has been locked
     // successfully (i.e. after NotifyLockScreenShown() has been called).
     virtual void ScreenIsLocked() {}
 
     // Called when the session manager announces that the screen has been
     // unlocked successfully (i.e. after NotifyLockScreenDismissed() has
     // been called).
     virtual void ScreenIsUnlocked() {}
+
+    // Called after EmitLoginPromptVisible is called.
+    virtual void EmitLoginPromptVisibleCalled() {}
   };
 
   // Adds and removes the observer.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
   virtual bool HasObserver(Observer* observer) = 0;
 
   // Kicks off an attempt to emit the "login-prompt-ready" upstart signal.
   virtual void EmitLoginPromptReady() = 0;
 
@@ skipping 112 matching lines @@
   // Create() should be used instead.
   SessionManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SessionManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_SESSION_MANAGER_CLIENT_H_