Fix HDCP in mirror mode.

ash/display/display_manager.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 ASH_DISPLAY_DISPLAY_MANAGER_H_
 #define ASH_DISPLAY_DISPLAY_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 234 matching lines @@
   void SetMirrorMode(bool mirrored);
 
   // Used to emulate display change when run in a desktop environment instead
   // of on a device.
   void AddRemoveDisplay();
   void ToggleDisplayScaleFactor();
 
   // SoftwareMirroringController override:
 #if defined(OS_CHROMEOS)
   virtual void SetSoftwareMirroring(bool enabled) OVERRIDE;
+  virtual bool SoftwareMirroringEnabled() const OVERRIDE;
 #endif
   bool software_mirroring_enabled() const {
     return second_display_mode_ == MIRRORING;
   };
 
   bool virtual_keyboard_root_window_enabled() const {
     return second_display_mode_ == VIRTUAL_KEYBOARD;
   };
 
   // Sets/gets second display mode.
@@ skipping 95 matching lines @@
   SecondDisplayMode second_display_mode_;
   int64 mirrored_display_id_;
   gfx::Display non_desktop_display_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayManager);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_MANAGER_H_