ozone: Allow building for ozone without depending on pango

ui/gfx/ozone/impl/file_surface_factory_ozone.h

Index: ui/gfx/ozone/impl/file_surface_factory_ozone.h
diff --git a/ui/gfx/ozone/impl/file_surface_factory_ozone.h b/ui/gfx/ozone/impl/file_surface_factory_ozone.h
index 6b1df26409d4d2d743af21d28738ef84afcbcf37..9294325f61d27a50a1f51a5365898b9068bb8a0c 100644
--- a/ui/gfx/ozone/impl/file_surface_factory_ozone.h
+++ b/ui/gfx/ozone/impl/file_surface_factory_ozone.h
@@ -7,6 +7,7 @@
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
+#include "ui/gfx/gfx_export.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/ozone/surface_factory_ozone.h"
 #include "ui/gfx/skia_util.h"
@@ -16,7 +17,7 @@ class SkCanvas;
 
 namespace gfx {
 
-class FileSurfaceFactoryOzone : public SurfaceFactoryOzone {
+class GFX_EXPORT FileSurfaceFactoryOzone : public SurfaceFactoryOzone {
  public:
   explicit FileSurfaceFactoryOzone(const base::FilePath& dump_location);
   virtual ~FileSurfaceFactoryOzone();