Add format modifier IDs for EGL_EXT_image_dma_buf_import extension

ui/gfx/native_pixmap_handle_ozone.cc

Index: ui/gfx/native_pixmap_handle_ozone.cc
diff --git a/ui/gfx/native_pixmap_handle_ozone.cc b/ui/gfx/native_pixmap_handle_ozone.cc
index d48e36fd7600977a901c3a9c3c761595bdd3555d..6250a53849647a9d7bec4bd9a5c768387ec1e49a 100644
--- a/ui/gfx/native_pixmap_handle_ozone.cc
+++ b/ui/gfx/native_pixmap_handle_ozone.cc
@@ -6,6 +6,15 @@
 
 namespace gfx {
 
+GbmBufferPlane::GbmBufferPlane() : stride(0), offset(0), modifier(0) {}
+
+GbmBufferPlane::GbmBufferPlane(int stride, int offset, uint64_t modifier)
+    : stride(stride), offset(offset), modifier(modifier) {}
+
+GbmBufferPlane::GbmBufferPlane(const GbmBufferPlane& other) = default;
+
+GbmBufferPlane::~GbmBufferPlane() {}
+
 NativePixmapHandle::NativePixmapHandle() {}
 NativePixmapHandle::NativePixmapHandle(const NativePixmapHandle& other) =
     default;