cc: turn on strict paint property checking

ash/drag_drop/drag_image_view.h

Index: ash/drag_drop/drag_image_view.h
diff --git a/ash/drag_drop/drag_image_view.h b/ash/drag_drop/drag_image_view.h
index 1415f50714e6c3ba483dd3f087ec172fb743baf2..15d2ad5ccbfebd7ad89c4345a9421530037b1553 100644
--- a/ash/drag_drop/drag_image_view.h
+++ b/ash/drag_drop/drag_image_view.h
@@ -8,6 +8,10 @@
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/views/controls/image_view.h"
 
+namespace gfx {
+class Image;
+}
+
 namespace views {
 class Widget;
 }
@@ -58,9 +62,14 @@ class DragImageView : public views::ImageView {
   void SetOpacity(float opacity);
 
  private:
+  gfx::Image* DragHint() const;
+
   // Overridden from views::ImageView.
   void OnPaint(gfx::Canvas* canvas) override;
 
+  // Overridden from views::view
+  void Layout() override;
+
   scoped_ptr<views::Widget> widget_;
   gfx::Size widget_size_;