Add support for a virtual display on ChromeOS

ui/display/chromeos/display_configurator.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 UI_DISPLAY_CHROMEOS_DISPLAY_CONFIGURATOR_H_
 #define UI_DISPLAY_CHROMEOS_DISPLAY_CONFIGURATOR_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/event_types.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
+#include "ui/display/chromeos/display_snapshot_virtual.h"
 #include "ui/display/display_export.h"
 #include "ui/display/types/display_constants.h"
 #include "ui/display/types/native_display_observer.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace gfx {
 class Point;
 class Size;
 }
 
@@ skipping 251 matching lines @@
 
   // Checks the available color profiles for |display_id| and fills the result
   // into |profiles|.
   std::vector<ui::ColorCalibrationProfile> GetAvailableColorCalibrationProfiles(
       int64_t display_id);
 
   // Updates the color calibration to |new_profile|.
   bool SetColorCalibrationProfile(int64_t display_id,
                                   ui::ColorCalibrationProfile new_profile);
 
+  // Enables/disables virtual display.
+  void EnableVirtualDisplay(gfx::Size display_size);
+  void DisableVirtualDisplay();
+  bool IsVirtualDisplayEnabled() const;
+
+  // Finds the virtual display id, returns gfx::Display::kInvalidDisplayID if
+  // none.
+  int64_t GetVirtualDisplayId();
+
   // static
   static DisplayConfigurator* GetInstance();
-
  private:
   friend struct DefaultSingletonTraits<DisplayConfigurator>;
   friend class ui::test::DisplayConfiguratorTest;
   class DisplayLayoutManagerImpl;
 
   DisplayConfigurator();
   ~DisplayConfigurator() override;
 
   // Mapping a display_id to a protection request bitmask.
   typedef std::map<int64_t, uint32_t> ContentProtections;
@@ skipping 117 matching lines @@
 
   // Display protection requests of each client.
   ProtectionRequests client_protection_requests_;
 
   // Display controlled by an external entity.
   bool display_externally_controlled_;
 
   // Whether the displays are currently suspended.
   bool displays_suspended_;
 
+  // Virtual display control.
+  scoped_ptr<DisplaySnapshotVirtual> virtual_display_snapshot_;
+
   scoped_ptr<DisplayLayoutManager> layout_manager_;
 
   scoped_ptr<UpdateDisplayConfigurationTask> configuration_task_;
 
   // This must be the last variable.
   base::WeakPtrFactory<DisplayConfigurator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayConfigurator);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_DISPLAY_CONFIGURATOR_H_