Ozone: Dont hardcode format to YUV when using Overlay Composition.

ui/ozone/platform/drm/gpu/drm_thread.cc

Index: ui/ozone/platform/drm/gpu/drm_thread.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_thread.cc b/ui/ozone/platform/drm/gpu/drm_thread.cc
index 901dedb08c7c0aa19398ed49293842dd7a6f6703..fbd194c55200c3666f02255e4efdac2ee67f7703 100644
--- a/ui/ozone/platform/drm/gpu/drm_thread.cc
+++ b/ui/ozone/platform/drm/gpu/drm_thread.cc
@@ -124,6 +124,14 @@ void DrmThread::GetVSyncParameters(
     window->GetVSyncParameters(callback);
 }
 
+void DrmThread::GetOverlayBufferConfigurations(
+    gfx::AcceleratedWidget widget,
+    const OverlayParamCallback& callback) {
+  DrmWindow* window = screen_manager_->GetWindow(widget);
+  if (window)
+    window->GetOverlayBufferConfigurations(callback);
+}
+
 void DrmThread::CreateWindow(gfx::AcceleratedWidget widget) {
   scoped_ptr<DrmWindow> window(
       new DrmWindow(widget, device_manager_.get(), screen_manager_.get()));
@@ -156,12 +164,14 @@ void DrmThread::MoveCursor(gfx::AcceleratedWidget widget,
 
 void DrmThread::CheckOverlayCapabilities(
     gfx::AcceleratedWidget widget,
-    const std::vector<OverlayCheck_Params>& overlays,
+    const std::vector<OverlayCheck_Params>& current_combination,
+    const std::vector<OverlayCheck_Params>& new_combination,
     const base::Callback<void(gfx::AcceleratedWidget,
                               const std::vector<OverlayCheck_Params>&)>&
         callback) {
   callback.Run(widget, screen_manager_->GetWindow(widget)
-                           ->TestPageFlip(overlays, buffer_generator_.get()));
+                           ->TestPageFlip(current_combination, new_combination,
+                                          buffer_generator_.get()));
 }
 
 void DrmThread::RefreshNativeDisplays(