Add ScrollDirectionPhysical enum in Scroll types.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1541 matching lines @@
             return scrollViewWithKeyboard(event.windowsKeyCode, event.modifiers);
         break;
     default:
         break;
     }
     return false;
 }
 
 bool WebViewImpl::scrollViewWithKeyboard(int keyCode, int modifiers)
 {
-    ScrollDirection scrollDirection;
+    ScrollDirectionPhysical scrollDirectionPhysical;
     ScrollGranularity scrollGranularity;
 #if OS(MACOSX)
     // Control-Up/Down should be PageUp/Down on Mac.
     if (modifiers & WebMouseEvent::ControlKey) {
       if (keyCode == VKEY_UP)
         keyCode = VKEY_PRIOR;
       else if (keyCode == VKEY_DOWN)
         keyCode = VKEY_NEXT;
     }
 #endif
-    if (!mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranularity))
+    if (!mapKeyCodeForScroll(keyCode, &scrollDirectionPhysical, &scrollGranularity))
         return false;
 
     if (LocalFrame* frame = toLocalFrame(focusedCoreFrame()))
-        return frame->eventHandler().bubblingScroll(scrollDirection, scrollGranularity);
+        return frame->eventHandler().bubblingScroll(toScrollDirection(scrollDirectionPhysical), scrollGranularity);
     return false;
 }
 
 bool WebViewImpl::mapKeyCodeForScroll(
     int keyCode,
-    ScrollDirection* scrollDirection,
+    ScrollDirectionPhysical* scrollDirection,
     ScrollGranularity* scrollGranularity)
 {
     switch (keyCode) {
     case VKEY_LEFT:
         *scrollDirection = ScrollLeft;
         *scrollGranularity = ScrollByLine;
         break;
     case VKEY_RIGHT:
         *scrollDirection = ScrollRight;
         *scrollGranularity = ScrollByLine;
@@ skipping 2935 matching lines @@
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 void WebViewImpl::forceNextWebGLContextCreationToFail()
 {
     WebGLRenderingContext::forceNextWebGLContextCreationToFail();
 }
 
 } // namespace blink