[Refactor]: Move drag_widget_ out of X11WholeScreenMoveLoop

ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc

Index: ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc
diff --git a/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc b/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc
index b911bc412bcefa3f1b1a7f652b9b53f250dd1254..1008289d1d9e4d40563e523592f4f9613733b9bf 100644
--- a/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc
+++ b/ui/views/widget/desktop_aura/desktop_drag_drop_client_aurax11_unittest.cc
@@ -90,8 +90,6 @@ class TestMoveLoop : public X11MoveLoop {
                            gfx::NativeCursor cursor) OVERRIDE;
   virtual void UpdateCursor(gfx::NativeCursor cursor) OVERRIDE;
   virtual void EndMoveLoop() OVERRIDE;
-  virtual void SetDragImage(const gfx::ImageSkia& image,
-                            const gfx::Vector2dF& offset) OVERRIDE;
 
  private:
   // Not owned.
@@ -240,10 +238,6 @@ void TestMoveLoop::EndMoveLoop() {
   }
 }
 
-void TestMoveLoop::SetDragImage(const gfx::ImageSkia& image,
-                                const gfx::Vector2dF& offset) {
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 // TestDragDropClient