Disable multi-planar import for now

ui/ozone/platform/drm/gpu/gbm_buffer.cc

Index: ui/ozone/platform/drm/gpu/gbm_buffer.cc
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer.cc b/ui/ozone/platform/drm/gpu/gbm_buffer.cc
index 32c8209d9c3a76cac9cde80f182cb1f960eece0b..0db6f9ac186e4c8f45e5d44bbdcb439079a107c4 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer.cc
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer.cc
@@ -167,27 +167,22 @@ scoped_refptr<GbmBuffer> GbmBuffer::CreateBufferFromFds(
 
   // Use scanout if supported.
   bool use_scanout = gbm_device_is_format_supported(
-      gbm->device(), fourcc_format, GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
+                         gbm->device(), fourcc_format,
+                         GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING) &&
+                     (planes.size() == 1);
 
   gbm_bo* bo = nullptr;
   if (use_scanout) {
-    struct gbm_import_fd_planar_data fd_data {};
-    for (size_t i = 0; i < fds.size(); ++i)
-      fd_data.fds[i] = fds[i].get();
-
+    struct gbm_import_fd_data fd_data;
+    fd_data.fd = fds[0].get();
     fd_data.width = size.width();
     fd_data.height = size.height();
+    fd_data.stride = planes[0].stride;
     fd_data.format = fourcc_format;
 
-    for (size_t i = 0; i < planes.size(); ++i) {
-      fd_data.strides[i] = planes[i].stride;
-      fd_data.offsets[i] = planes[i].offset;
-      fd_data.format_modifiers[i] = planes[i].modifier;
-    }
-
-    // The fds passed to gbm_bo_import are not ref-counted and need to be
+    // The fd passed to gbm_bo_import is not ref-counted and need to be
     // kept open for the lifetime of the buffer.
-    bo = gbm_bo_import(gbm->device(), GBM_BO_IMPORT_FD_PLANAR, &fd_data,
+    bo = gbm_bo_import(gbm->device(), GBM_BO_IMPORT_FD, &fd_data,
                        GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
     if (!bo) {
       LOG(ERROR) << "nullptr returned from gbm_bo_import";