[Ozone-Drm] Notify cursor of channel established last

ui/ozone/platform/drm/ozone_platform_gbm.cc

Index: ui/ozone/platform/drm/ozone_platform_gbm.cc
diff --git a/ui/ozone/platform/drm/ozone_platform_gbm.cc b/ui/ozone/platform/drm/ozone_platform_gbm.cc
index 370e5b44acae7a0546c463fd37e4b4209050b2b8..a4ad4cfcc72544ce455ed685916bdf535cde2a6c 100644
--- a/ui/ozone/platform/drm/ozone_platform_gbm.cc
+++ b/ui/ozone/platform/drm/ozone_platform_gbm.cc
@@ -154,12 +154,11 @@ class OzonePlatformGbm : public OzonePlatform {
     if (!surface_factory_ozone_)
       surface_factory_ozone_.reset(new GbmSurfaceFactory(use_surfaceless_));
     device_manager_ = CreateDeviceManager();
-    gpu_platform_support_host_.reset(new DrmGpuPlatformSupportHost());
+    cursor_.reset(new DrmCursor(window_manager_.get()));
+    gpu_platform_support_host_.reset(
+        new DrmGpuPlatformSupportHost(cursor_.get()));
     window_manager_.reset(new DrmWindowHostManager());
     cursor_factory_ozone_.reset(new BitmapCursorFactoryOzone);
-    cursor_.reset(
-        new DrmCursor(window_manager_.get(), gpu_platform_support_host_.get()));
-    cursor_->Init();
 #if defined(USE_XKBCOMMON)
     KeyboardLayoutEngineManager::SetKeyboardLayoutEngine(make_scoped_ptr(
         new XkbKeyboardLayoutEngine(xkb_evdev_code_converter_)));
@@ -218,13 +217,13 @@ class OzonePlatformGbm : public OzonePlatform {
   scoped_ptr<DrmGpuPlatformSupport> gpu_platform_support_;
   scoped_ptr<DrmWindowManager> window_delegate_manager_;
 
-  // Obejcts in the Browser process.
+  // Objects in the Browser process.
   base::FilePath primary_graphics_card_path_;
   scoped_ptr<DeviceManager> device_manager_;
   scoped_ptr<BitmapCursorFactoryOzone> cursor_factory_ozone_;
+  scoped_ptr<DrmCursor> cursor_;
   scoped_ptr<EventFactoryEvdev> event_factory_ozone_;
   scoped_ptr<DrmGpuPlatformSupportHost> gpu_platform_support_host_;
-  scoped_ptr<DrmCursor> cursor_;
   scoped_ptr<DrmWindowHostManager> window_manager_;
   scoped_ptr<DisplayManager> display_manager_;