ozone: dri: Fix undefined references in DRI platform GN build

ui/ozone/platform/dri/crtc_controller.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_
 #define UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
 
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
+#include "ui/ozone/ozone_export.h"
 #include "ui/ozone/platform/dri/hardware_display_plane_manager.h"
 #include "ui/ozone/platform/dri/overlay_plane.h"
 #include "ui/ozone/platform/dri/scoped_drm_types.h"
 
 namespace ui {
 
 class DriWrapper;
 class PageFlipObserver;
 
 // Wrapper around a CRTC.
 //
 // One CRTC can be paired up with one or more connectors. The simplest
 // configuration represents one CRTC driving one monitor, while pairing up a
 // CRTC with multiple connectors results in hardware mirroring.
-class CrtcController : public base::SupportsWeakPtr<CrtcController> {
+class OZONE_EXPORT CrtcController
+    : public base::SupportsWeakPtr<CrtcController> {
  public:
   CrtcController(DriWrapper* drm, uint32_t crtc, uint32_t connector);
   ~CrtcController();
 
   uint32_t crtc() const { return crtc_; }
   uint32_t connector() const { return connector_; }
   DriWrapper* drm() const { return drm_; }
   bool is_disabled() const { return is_disabled_; }
   bool page_flip_pending() const { return page_flip_pending_; }
   uint64_t time_of_last_flip() const { return time_of_last_flip_; }
@@ skipping 65 matching lines @@
   uint64_t time_of_last_flip_;
 
   ObserverList<PageFlipObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(CrtcController);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_CRTC_CONTROLLER_H_