Use float for scroll offset.

third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp

Index: third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
diff --git a/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp b/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
index 7af402832792fe9f9a9d0b8c581a84abd24060ad..6730a1bb8d497b016365071641ebfca12aa2d7f9 100644
--- a/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
+++ b/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
@@ -158,13 +158,14 @@ TEST_F(ExternalPopupMenuTest, PopupAccountsForVisualViewportOffset) {
   IntRect rectInDocument = menuList->absoluteBoundingBoxRect();
 
   webView()->setPageScaleFactor(2);
-  IntPoint scrollDelta(20, 30);
+  ScrollOffset scrollDelta(20, 30);
   visualViewport.move(scrollDelta);
 
   select->showPopup();
 
-  EXPECT_EQ(rectInDocument.x() - scrollDelta.x(), client().shownBounds().x);
-  EXPECT_EQ(rectInDocument.y() - scrollDelta.y(), client().shownBounds().y);
+  EXPECT_EQ(rectInDocument.x() - scrollDelta.width(), client().shownBounds().x);
+  EXPECT_EQ(rectInDocument.y() - scrollDelta.height(),
+            client().shownBounds().y);
 }
 
 TEST_F(ExternalPopupMenuTest, DidAcceptIndex) {