[WIP] Make content_shell run under Wayland

ui/ozone/public/ozone_platform.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_OZONE_PUBLIC_OZONE_PLATFORM_H_
 #define UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
 class InterfaceRegistry;
 }
 
 namespace ui {
 
 class CursorFactoryOzone;
 class InputController;
 class GpuPlatformSupportHost;
 class NativeDisplayDelegate;
 class OverlayManagerOzone;
+class OzonePlatformScreenDelegate;
 class PlatformWindow;
 class PlatformWindowDelegate;
 class SurfaceFactoryOzone;
 class SystemInputInjector;
 
 // Base class for Ozone platform implementations.
 //
 // Ozone platforms must override this class and implement the virtual
 // GetFooFactoryOzone() methods to provide implementations of the
 // various ozone interfaces.
@@ skipping 64 matching lines @@
 
   // Ozone platform implementations may also choose to expose mojo interfaces to
   // internal functionality. Embedders wishing to take advantage of ozone mojo
   // implementations must invoke AddInterfaces with a valid
   // shell::InterfaceRegistry* pointer to export all Mojo interfaces defined
   // within Ozone.
   //
   // A default do-nothing implementation is provided to permit platform
   // implementations to opt out of implementing any Mojo interfaces.
   virtual void AddInterfaces(shell::InterfaceRegistry* registry);
+  virtual void SetScreenOutputObserver(OzonePlatformScreenDelegate*) {}
 
  private:
   virtual void InitializeUI() = 0;
   virtual void InitializeGPU() = 0;
   virtual void InitializeUI(const InitParams& args);
   virtual void InitializeGPU(const InitParams& args);
 
   static void CreateInstance();
 
   static OzonePlatform* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(OzonePlatform);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PUBLIC_OZONE_PLATFORM_H_