Make pan-scrolling related mouse cursor types windows-specific

Source/platform/Cursor.cpp

Index: Source/platform/Cursor.cpp
diff --git a/Source/platform/Cursor.cpp b/Source/platform/Cursor.cpp
index 9413d22dcc833b808baad8bc3c7bdf91f5485282..da162ba3fe306fb21db83a379485c0d96163bab3 100644
--- a/Source/platform/Cursor.cpp
+++ b/Source/platform/Cursor.cpp
@@ -90,6 +90,7 @@ const Cursor& Cursor::fromType(Cursor::Type type)
         return columnResizeCursor();
     case Cursor::RowResize:
         return rowResizeCursor();
+#if OS(WIN)
     case Cursor::MiddlePanning:
         return middlePanningCursor();
     case Cursor::EastPanning:
@@ -108,6 +109,7 @@ const Cursor& Cursor::fromType(Cursor::Type type)
         return southWestPanningCursor();
     case Cursor::WestPanning:
         return westPanningCursor();
+#endif // OS(WIN)
     case Cursor::Move:
         return moveCursor();
     case Cursor::VerticalText:
@@ -377,6 +379,7 @@ const Cursor& rowResizeCursor()
     return c;
 }
 
+#if OS(WIN)
 const Cursor& middlePanningCursor()
 {
     DEFINE_STATIC_LOCAL(Cursor, c, (Cursor::MiddlePanning));
@@ -430,6 +433,7 @@ const Cursor& westPanningCursor()
     DEFINE_STATIC_LOCAL(Cursor, c, (Cursor::WestPanning));
     return c;
 }
+#endif // OS(WIN)
 
 const Cursor& grabCursor()
 {