Use float for scroll offset.

third_party/WebKit/Source/core/testing/Internals.cpp

Index: third_party/WebKit/Source/core/testing/Internals.cpp
diff --git a/third_party/WebKit/Source/core/testing/Internals.cpp b/third_party/WebKit/Source/core/testing/Internals.cpp
index bb8adbd85da00516c8f6d437adb757039ec4d2e5..368efcecccede00d86f619da0aa8d8f608d2a2b2 100644
--- a/third_party/WebKit/Source/core/testing/Internals.cpp
+++ b/third_party/WebKit/Source/core/testing/Internals.cpp
@@ -235,7 +235,7 @@ void Internals::resetToConsistentState(Page* page) {
   page->deprecatedLocalMainFrame()
       ->view()
       ->layoutViewportScrollableArea()
-      ->setScrollPosition(IntPoint(0, 0), ProgrammaticScroll);
+      ->setScrollOffset(ScrollOffset(), ProgrammaticScroll);
   overrideUserPreferredLanguages(Vector<AtomicString>());
   if (!page->deprecatedLocalMainFrame()
            ->spellChecker()
@@ -1064,7 +1064,7 @@ void Internals::setFrameViewPosition(Document* document,
   bool scrollbarsSuppressedOldValue = frameView->scrollbarsSuppressed();
 
   frameView->setScrollbarsSuppressed(false);
-  frameView->setScrollOffsetFromInternals(IntPoint(x, y));
+  frameView->updateScrollOffsetFromInternals(IntSize(x, y));
   frameView->setScrollbarsSuppressed(scrollbarsSuppressedOldValue);
 }
 
@@ -2909,18 +2909,18 @@ int Internals::visualViewportWidth() {
       .width();
 }
 
-double Internals::visualViewportScrollX() {
+float Internals::visualViewportScrollX() {
   if (!frame())
     return 0;
 
-  return frame()->view()->getScrollableArea()->scrollPositionDouble().x();
+  return frame()->view()->getScrollableArea()->scrollOffset().width();
 }
 
-double Internals::visualViewportScrollY() {
+float Internals::visualViewportScrollY() {
   if (!frame())
     return 0;
 
-  return frame()->view()->getScrollableArea()->scrollPositionDouble().y();
+  return frame()->view()->getScrollableArea()->scrollOffset().height();
 }
 
 ValueIterable<int>::IterationSource* Internals::startIteration(