Fixed pos objects are offset from the top of the page in paged media

third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
index 8b06af2b00db6562533cf9dc589dd73e74471493..d72d2566b16a9d200eab52df317fb430d950e859 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
@@ -608,6 +608,13 @@ PaintLayerPainter::PaintResult PaintLayerPainter::paintLayerWithTransform(
     unsigned pages =
         ceilf(view->documentRect().height() / view->pageLogicalHeight());
     LayoutPoint paginationOffset;
+
+    // The fixed position object is offset from the top of the page, so remove
+    // any scroll offset.
+    LayoutPoint offsetFromRoot;
+    m_paintLayer.convertToLayerCoords(paintingInfo.rootLayer, offsetFromRoot);
+    paginationOffset -= offsetFromRoot - m_paintLayer.location();
+
     for (unsigned i = 0; i < pages; i++) {
       PaintLayerFragment fragment;
       fragment.backgroundRect = paintingInfo.paintDirtyRect;