Use viewportConstrainedVisibleContentRect() to get the scrolling offset

Source/web/FindInPageCoordinates.cpp

Index: Source/web/FindInPageCoordinates.cpp
diff --git a/Source/web/FindInPageCoordinates.cpp b/Source/web/FindInPageCoordinates.cpp
index eaeec4520c08f0711d11c367c137932bc0c93634..1b3288fc6909375042acf24e4f516478a6f3f35a 100644
--- a/Source/web/FindInPageCoordinates.cpp
+++ b/Source/web/FindInPageCoordinates.cpp
@@ -87,7 +87,7 @@ static FloatRect toNormalizedRect(const FloatRect& absoluteRect, const RenderObj
     // Fixed positions do not make sense in this coordinate system, but need to leave consistent tickmarks.
     // So, use their position when the view is not scrolled, like an absolute position.
     if (renderer->style()->position() == FixedPosition && container->isRenderView())
-        normalizedRect.move(-toRenderView(container)->frameView()->scrollOffsetForFixedPosition());
+        normalizedRect.move(-toRenderView(container)->frameView()->scrollOffsetForViewportConstrainedObjects());
 
     normalizedRect.scale(1 / containerRect.width(), 1 / containerRect.height());
     return normalizedRect;