[Ozone-Dri] Decouple the IO helper thread from DriWrapper

ui/ozone/platform/dri/dri_gpu_platform_support.h

Index: ui/ozone/platform/dri/dri_gpu_platform_support.h
diff --git a/ui/ozone/platform/dri/dri_gpu_platform_support.h b/ui/ozone/platform/dri/dri_gpu_platform_support.h
index 71925ae1e96c3499a27f5b64cd32603974a801b0..2b9fc183fe8d6c7cc21cc790d2923127becc82f3 100644
--- a/ui/ozone/platform/dri/dri_gpu_platform_support.h
+++ b/ui/ozone/platform/dri/dri_gpu_platform_support.h
@@ -25,6 +25,7 @@ class Rect;
 
 namespace ui {
 
+class DriHelperThread;
 class DriSurfaceFactory;
 class DriWindowDelegate;
 class DriWindowDelegateManager;
@@ -40,6 +41,7 @@ class DriGpuPlatformSupport : public GpuPlatformSupport {
   DriGpuPlatformSupport(DriWrapper* drm,
                         DriWindowDelegateManager* window_manager,
                         ScreenManager* screen_manager,
+                        DriHelperThread* helper_thread,
                         scoped_ptr<NativeDisplayDelegateDri> ndd);
   ~DriGpuPlatformSupport() override;