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

ui/ozone/platform/dri/ozone_platform_dri.cc

Index: ui/ozone/platform/dri/ozone_platform_dri.cc
diff --git a/ui/ozone/platform/dri/ozone_platform_dri.cc b/ui/ozone/platform/dri/ozone_platform_dri.cc
index a91ea1fa9fcb0f1a993e474d0bfb4f5b5189992b..5a3d31ff7a4a5767f600181ccdb407216233f687 100644
--- a/ui/ozone/platform/dri/ozone_platform_dri.cc
+++ b/ui/ozone/platform/dri/ozone_platform_dri.cc
@@ -47,7 +47,7 @@ const char kDefaultGraphicsCardPath[] = "/dev/dri/card0";
 class OzonePlatformDri : public OzonePlatform {
  public:
   OzonePlatformDri()
-      : dri_(new DriWrapper(kDefaultGraphicsCardPath, true)),
+      : dri_(new DriWrapper(kDefaultGraphicsCardPath, nullptr)),
         buffer_generator_(new DriBufferGenerator()),
         screen_manager_(new ScreenManager(dri_.get(), buffer_generator_.get())),
         device_manager_(CreateDeviceManager()) {}
@@ -97,7 +97,7 @@ class OzonePlatformDri : public OzonePlatform {
     ndd->Initialize();
     gpu_platform_support_.reset(
         new DriGpuPlatformSupport(dri_.get(), &window_delegate_manager_,
-                                  screen_manager_.get(), ndd.Pass()));
+                                  screen_manager_.get(), nullptr, ndd.Pass()));
     gpu_platform_support_host_.reset(new DriGpuPlatformSupportHost());
     window_manager_.reset(new DriWindowManager());
     cursor_factory_ozone_.reset(new BitmapCursorFactoryOzone);