Define Panning cursors only on Windows

ui/base/cursor/cursor_loader_x11.cc

Index: ui/base/cursor/cursor_loader_x11.cc
diff --git a/ui/base/cursor/cursor_loader_x11.cc b/ui/base/cursor/cursor_loader_x11.cc
index 8cfcce6e6f19ff5f6e07d286afccd26f6f6329fd..22bf20fd209708a38e0257cef6a8faf76f3a596f 100644
--- a/ui/base/cursor/cursor_loader_x11.cc
+++ b/ui/base/cursor/cursor_loader_x11.cc
@@ -26,24 +26,6 @@ namespace {
 // Returns X font cursor shape from an Aura cursor.
 int CursorShapeFromNative(const gfx::NativeCursor& native_cursor) {
   switch (native_cursor.native_type()) {
-    case ui::kCursorMiddlePanning:
-      return XC_fleur;
-    case ui::kCursorEastPanning:
-      return XC_sb_right_arrow;
-    case ui::kCursorNorthPanning:
-      return XC_sb_up_arrow;
-    case ui::kCursorNorthEastPanning:
-      return XC_top_right_corner;
-    case ui::kCursorNorthWestPanning:
-      return XC_top_left_corner;
-    case ui::kCursorSouthPanning:
-      return XC_sb_down_arrow;
-    case ui::kCursorSouthEastPanning:
-      return XC_bottom_right_corner;
-    case ui::kCursorSouthWestPanning:
-      return XC_bottom_left_corner;
-    case ui::kCursorWestPanning:
-      return XC_sb_left_arrow;
     case ui::kCursorNone:
     case ui::kCursorGrab:
     case ui::kCursorGrabbing: