[WIP] Make content_shell run under Wayland

ui/ozone/platform/wayland/ozone_platform_wayland.cc

Index: ui/ozone/platform/wayland/ozone_platform_wayland.cc
diff --git a/ui/ozone/platform/wayland/ozone_platform_wayland.cc b/ui/ozone/platform/wayland/ozone_platform_wayland.cc
index 3ca9242be62950f4df7676efb1b3ebdcfaed65c0..6c0df0f55336380035f0e7e8ee2ae9c66a280252 100644
--- a/ui/ozone/platform/wayland/ozone_platform_wayland.cc
+++ b/ui/ozone/platform/wayland/ozone_platform_wayland.cc
@@ -14,6 +14,7 @@
 #include "ui/ozone/public/gpu_platform_support_host.h"
 #include "ui/ozone/public/input_controller.h"
 #include "ui/ozone/public/ozone_platform.h"
+#include "ui/ozone/public/ozone_platform_screen_delegate.h"
 #include "ui/ozone/public/system_input_injector.h"
 
 namespace ui {
@@ -103,6 +104,11 @@ class OzonePlatformWayland : public OzonePlatform {
     }
   }
 
+  void SetScreenOutputObserver(
+      OzonePlatformScreenDelegate* screenDelegate) override {
+    connection_->SetOutputObserver(screenDelegate);
+  }
+
  private:
   std::unique_ptr<WaylandConnection> connection_;
   std::unique_ptr<WaylandSurfaceFactory> surface_factory_;