Fix IWYU violators that don't include scoped_ptr.h in CrOS build.

remoting/host/chromeos/aura_desktop_capturer.h

 // Copyright 2014 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 REMOTING_HOST_CHROMEOS_AURA_DESKTOP_CAPTURER_H_
 #define REMOTING_HOST_CHROMEOS_AURA_DESKTOP_CAPTURER_H_
 
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
 
 namespace cc {
 class CopyOutputResult;
 }  // namespace cc
 
 namespace aura {
 class Window;
 }  // namespace aura
@@ skipping 26 matching lines @@
   aura::Window* desktop_window_;
 
   base::WeakPtrFactory<AuraDesktopCapturer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AuraDesktopCapturer);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_CHROMEOS_AURA_DESKTOP_CAPTURER_H_