1 files changed, 10 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/paint/paint_property_tree_builder.h b/chromium/third_party/blink/renderer/core/paint/paint_property_tree_builder.h
index 5ae019dbc8f..4248108a7c9 100644
--- a/chromium/third_party/blink/renderer/core/paint/paint_property_tree_builder.h
+++ b/chromium/third_party/blink/renderer/core/paint/paint_property_tree_builder.h
@@ -20,6 +20,7 @@ class LayoutObject;
 class LayoutTableSection;
 class LocalFrameView;
 class PaintLayer;
+class VisualViewport;
 
 // The context for PaintPropertyTreeBuilder.
 // It's responsible for bookkeeping tree state in other order, for example, the
@@ -106,6 +107,8 @@ struct PaintPropertyTreeBuilderFragmentContext {
   // The repeated paintings need to add an adjustment to the calculated paint
   // offset to paint at the desired place.
   LayoutSize repeating_paint_offset_adjustment;
+
+  LayoutPoint old_paint_offset;
 };
 
 struct PaintPropertyTreeBuilderContext {
@@ -160,6 +163,13 @@ struct PaintPropertyTreeBuilderContext {
   bool supports_composited_raster_invalidation = true;
 };
 
+class VisualViewportPaintPropertyTreeBuilder {
+ public:
+  // Update the paint properties for the visual viewport and ensure the context
+  // is up to date.
+  static void Update(VisualViewport&, PaintPropertyTreeBuilderContext&);
+};
+
 // Creates paint property tree nodes for non-local effects in the layout tree.
 // Non-local effects include but are not limited to: overflow clip, transform,
 // fixed-pos, animation, mask, filters, etc. It expects to be invoked for each