Define Panning cursors only on Windows

webkit/common/cursors/webcursor_gtk.cc

Index: webkit/common/cursors/webcursor_gtk.cc
diff --git a/webkit/common/cursors/webcursor_gtk.cc b/webkit/common/cursors/webcursor_gtk.cc
index eeb3aa93ea537995503560adf1bfd2483a4cc885..3ec8c9cb16bfa15bfed22579e6ec59a53e89b24e 100644
--- a/webkit/common/cursors/webcursor_gtk.cc
+++ b/webkit/common/cursors/webcursor_gtk.cc
@@ -91,24 +91,6 @@ int WebCursor::GetCursorType() const {
       return GDK_SB_H_DOUBLE_ARROW;  // TODO(evanm): is this correct?
     case WebCursorInfo::TypeRowResize:
       return GDK_SB_V_DOUBLE_ARROW;  // TODO(evanm): is this correct?
-    case WebCursorInfo::TypeMiddlePanning:
-      return GDK_FLEUR;
-    case WebCursorInfo::TypeEastPanning:
-      return GDK_SB_RIGHT_ARROW;
-    case WebCursorInfo::TypeNorthPanning:
-      return GDK_SB_UP_ARROW;
-    case WebCursorInfo::TypeNorthEastPanning:
-      return GDK_TOP_RIGHT_CORNER;
-    case WebCursorInfo::TypeNorthWestPanning:
-      return GDK_TOP_LEFT_CORNER;
-    case WebCursorInfo::TypeSouthPanning:
-      return GDK_SB_DOWN_ARROW;
-    case WebCursorInfo::TypeSouthEastPanning:
-      return GDK_BOTTOM_RIGHT_CORNER;
-    case WebCursorInfo::TypeSouthWestPanning:
-      return GDK_BOTTOM_LEFT_CORNER;
-    case WebCursorInfo::TypeWestPanning:
-      return GDK_SB_LEFT_ARROW;
     case WebCursorInfo::TypeMove:
       return GDK_FLEUR;
     case WebCursorInfo::TypeVerticalText: