Add FakeDisplayDelegate for off device usage.

services/ui/display/platform_screen_ozone.h

 // Copyright 2016 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 SERVICES_UI_DISPLAY_PLATFORM_SCREEN_OZONE_H_
 #define SERVICES_UI_DISPLAY_PLATFORM_SCREEN_OZONE_H_
 
 #include <stdint.h>
 
 #include <set>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/interface_factory.h"
 #include "services/ui/display/platform_screen.h"
 #include "services/ui/public/interfaces/display/display_controller.mojom.h"
 #include "ui/display/chromeos/display_configurator.h"
 #include "ui/display/display.h"
+#include "ui/display/types/virtual_display_controller.h"
 
 namespace display {
 
 // PlatformScreenOzone provides the necessary functionality to configure all
 // attached physical displays on the ozone platform.
 class PlatformScreenOzone
     : public PlatformScreen,
       public ui::DisplayConfigurator::Observer,
       public shell::InterfaceFactory<mojom::DisplayController>,
       public mojom::DisplayController {
@@ skipping 63 matching lines @@
       const ui::DisplayConfigurator::DisplayStateList& displays,
       ui::MultipleDisplayState failed_new_state) override;
 
   // mojo::InterfaceFactory<mojom::DisplayController>:
   void Create(const shell::Identity& remote_identity,
               mojom::DisplayControllerRequest request) override;
 
   ui::DisplayConfigurator display_configurator_;
   PlatformScreenDelegate* delegate_ = nullptr;
 
+  // If not null it provides a way to modify the virtual display state for
+  // running off device.
+  VirtualDisplayController* virtual_display_controller_ = nullptr;
+
   // TODO(kylechar): These values can/should be replaced by DisplayLayout.
   int64_t primary_display_id_ = display::Display::kInvalidDisplayID;
   std::vector<DisplayInfo> cached_displays_;
   gfx::Point next_display_origin_;
 
   mojo::BindingSet<mojom::DisplayController> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformScreenOzone);
 };
 
 }  // namespace display
 
 #endif  // SERVICES_UI_DISPLAY_PLATFORM_SCREEN_OZONE_H_