Revert of Remove invert viewport scroll order setting from Blink

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index 6b5a05716d807e88f16b92b95795301acf124bd1..143a285cec09eff55cdb35f7bca6233e0eb36fbd 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -778,8 +778,9 @@
     if (m_frame->isMainFrame() && !m_viewportScrollableArea) {
         ScrollableArea& visualViewport = m_frame->host()->visualViewport();
         ScrollableArea* layoutViewport = layoutViewportScrollableArea();
+        bool invertScrollOrder = m_frame->settings()->invertViewportScrollOrder();
         ASSERT(layoutViewport);
-        m_viewportScrollableArea = RootFrameViewport::create(visualViewport, *layoutViewport);
+        m_viewportScrollableArea = RootFrameViewport::create(visualViewport, *layoutViewport, invertScrollOrder);
     }
 }