Use float for scroll offset.

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

Index: third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
index 5a627a037a844570a70db6d54df4fbe64439033e..d071bf15d1b57122d4b2eba9b35855354b336626 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
@@ -169,7 +169,7 @@ void PaintPropertyTreeBuilder::buildTreeNodes(
   createOrUpdateFrameViewContentClip(frameView, context.current.clip,
                                      frameView.preTranslation(), contentClip);
 
-  DoubleSize scrollOffset = frameView.scrollOffsetDouble();
+  ScrollOffset scrollOffset = frameView.scrollOffset();
   if (frameView.isScrollable() || !scrollOffset.isZero()) {
     TransformationMatrix frameScroll;
     frameScroll.translate(-scrollOffset.width(), -scrollOffset.height());
@@ -567,7 +567,7 @@ void PaintPropertyTreeBuilder::updateScrollAndScrollTranslation(
   if (object.hasOverflowClip()) {
     const LayoutBox& box = toLayoutBox(object);
     const PaintLayerScrollableArea* scrollableArea = box.getScrollableArea();
-    DoubleSize scrollOffset = box.scrolledContentOffset();
+    IntSize scrollOffset = box.scrolledContentOffset();
     if (!scrollOffset.isZero() || scrollableArea->scrollsOverflow()) {
       TransformationMatrix matrix = TransformationMatrix().translate(
           -scrollOffset.width(), -scrollOffset.height());