Add ScrollDirectionPhysical enum in Scroll types.

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 924 matching lines @@
         node = m_frame->document()->focusedElement();
 
     if (!node)
         node = m_mousePressNode.get();
 
     if (!node || !node->layoutObject())
         return false;
 
     LayoutBox* curBox = node->layoutObject()->enclosingBox();
     while (curBox && !curBox->isLayoutView()) {
-        ScrollDirection physicalDirection = toPhysicalDirection(
+        ScrollDirectionPhysical physicalDirection = toPhysicalDirection(
             direction, curBox->isHorizontalWritingMode(), curBox->style()->isFlippedBlocksWritingMode());
 
         // If we're at the stopNode, we should try to scroll it but we shouldn't bubble past it
         bool shouldStopBubbling = stopNode && *stopNode && curBox->node() == *stopNode;
         bool didScroll = curBox->scroll(physicalDirection, granularity, delta);
 
         if (didScroll && stopNode)
             *stopNode = curBox->node();
 
         if (didScroll || shouldStopBubbling) {
@@ skipping 21 matching lines @@
 bool EventHandler::bubblingScroll(ScrollDirection direction, ScrollGranularity granularity, Node* startingNode)
 {
     // The layout needs to be up to date to determine if we can scroll. We may be
     // here because of an onLoad event, in which case the final layout hasn't been performed yet.
     m_frame->document()->updateLayoutIgnorePendingStylesheets();
     // FIXME: enable scroll customization in this case. See crbug.com/410974.
     if (scroll(direction, granularity, startingNode))
         return true;
     LocalFrame* frame = m_frame;
     FrameView* view = frame->view();
-    if (view && view->scrollableArea()->scroll(direction, granularity)) {
+    ScrollDirectionPhysical physicalDirection =
+        toPhysicalDirection(direction, view->isVerticalDocument(), view->isFlippedDocument());
+    if (view && view->scrollableArea()->scroll(physicalDirection, granularity)) {
         setFrameWasScrolledByUser();
         return true;
     }
     Frame* parentFrame = frame->tree().parent();
     if (!parentFrame || !parentFrame->isLocalFrame())
         return false;
     // FIXME: Broken for OOPI.
     return toLocalFrame(parentFrame)->eventHandler().bubblingScroll(direction, granularity, m_frame->deprecatedLocalOwner());
 }
 
@@ skipping 2645 matching lines @@
     // FIXME: enable scroll customization in this case. See crbug.com/410974.
     if (scroll(direction, ScrollByPage)) {
         event->setDefaultHandled();
         return;
     }
 
     FrameView* view = m_frame->view();
     if (!view)
         return;
 
-    ScrollDirection physicalDirection =
+    ScrollDirectionPhysical physicalDirection =
         toPhysicalDirection(direction, view->isVerticalDocument(), view->isFlippedDocument());
 
     if (view->scrollableArea()->scroll(physicalDirection, ScrollByPage))
         event->setDefaultHandled();
 }
 
 void EventHandler::defaultBackspaceEventHandler(KeyboardEvent* event)
 {
     ASSERT(event->type() == EventTypeNames::keydown);
 
@@ skipping 505 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink