Hide fullscreen rotation jank

cc/ipc/compositor_frame_metadata_struct_traits.h

Index: cc/ipc/compositor_frame_metadata_struct_traits.h
diff --git a/cc/ipc/compositor_frame_metadata_struct_traits.h b/cc/ipc/compositor_frame_metadata_struct_traits.h
index 2959ababfe84768bb6c13f21ca7a30e7778e25f6..56128ab02c3529531e73befe3a5130172e153800 100644
--- a/cc/ipc/compositor_frame_metadata_struct_traits.h
+++ b/cc/ipc/compositor_frame_metadata_struct_traits.h
@@ -61,11 +61,20 @@ struct StructTraits<cc::mojom::CompositorFrameMetadataDataView,
     return metadata.may_contain_video;
   }
 
+  static bool is_fullscreen(const cc::CompositorFrameMetadata& metadata) {
+    return metadata.is_fullscreen;
+  }
+
   static bool is_resourceless_software_draw_with_scroll_or_animation(
       const cc::CompositorFrameMetadata& metadata) {
     return metadata.is_resourceless_software_draw_with_scroll_or_animation;
   }
 
+  static gfx::Size device_viewport_size(
+      const cc::CompositorFrameMetadata& metadata) {
+    return metadata.device_viewport_size;
+  }
+
   static float top_controls_height(
       const cc::CompositorFrameMetadata& metadata) {
     return metadata.top_controls_height;