Use float for scroll offset.

third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp

Index: third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp b/third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp
index 89bd506d83926764001d7f1f13959dd0defa49b6..f8c07de75bb1911cf232af397fd862a3a4a9446f 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsLayerTest.cpp
@@ -178,24 +178,23 @@ class FakeScrollableArea : public GarbageCollectedFinalized<FakeScrollableArea>,
   bool userInputScrollable(ScrollbarOrientation) const override { return true; }
   bool shouldPlaceVerticalScrollbarOnLeft() const override { return false; }
   int pageStep(ScrollbarOrientation) const override { return 0; }
-  IntPoint minimumScrollPosition() const override { return IntPoint(); }
-  IntPoint maximumScrollPosition() const override {
-    return IntPoint(contentsSize().width() - visibleWidth(),
-                    contentsSize().height() - visibleHeight());
+  IntSize minimumScrollOffsetInt() const override { return IntSize(); }
+  IntSize maximumScrollOffsetInt() const override {
+    return contentsSize() - IntSize(visibleWidth(), visibleHeight());
   }
 
-  void setScrollOffset(const DoublePoint& offset, ScrollType) override {
-    m_scrollPosition = offset;
+  void updateScrollOffset(const ScrollOffset& offset, ScrollType) override {
+    m_scrollOffset = offset;
   }
-  DoublePoint scrollPositionDouble() const override { return m_scrollPosition; }
-  IntPoint scrollPosition() const override {
-    return flooredIntPoint(m_scrollPosition);
+  ScrollOffset scrollOffset() const override { return m_scrollOffset; }
+  IntSize scrollOffsetInt() const override {
+    return flooredIntSize(m_scrollOffset);
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { ScrollableArea::trace(visitor); }
 
  private:
-  DoublePoint m_scrollPosition;
+  ScrollOffset m_scrollOffset;
 };
 
 TEST_F(GraphicsLayerTest, applyScrollToScrollableArea) {
@@ -206,8 +205,8 @@ TEST_F(GraphicsLayerTest, applyScrollToScrollableArea) {
   m_platformLayer->setScrollPositionDouble(scrollPosition);
   m_graphicsLayer->didScroll();
 
-  EXPECT_FLOAT_EQ(scrollPosition.x, scrollableArea->scrollPositionDouble().x());
-  EXPECT_FLOAT_EQ(scrollPosition.y, scrollableArea->scrollPositionDouble().y());
+  EXPECT_FLOAT_EQ(scrollPosition.x, scrollableArea->scrollOffset().width());
+  EXPECT_FLOAT_EQ(scrollPosition.y, scrollableArea->scrollOffset().height());
 }
 
 }  // namespace blink