mac: Update clients of scoped_nsobject.h.

ui/base/cocoa/controls/hover_image_menu_button_unittest.mm

Index: ui/base/cocoa/controls/hover_image_menu_button_unittest.mm
diff --git a/ui/base/cocoa/controls/hover_image_menu_button_unittest.mm b/ui/base/cocoa/controls/hover_image_menu_button_unittest.mm
index 45ed3689f0699e9d9ca3cd8882f2057bb356f95a..bf64f403636147df2c4a27736d8b7e74b3bf94a8 100644
--- a/ui/base/cocoa/controls/hover_image_menu_button_unittest.mm
+++ b/ui/base/cocoa/controls/hover_image_menu_button_unittest.mm
@@ -23,10 +23,10 @@ class HoverImageMenuButtonTest : public CocoaTest {
   virtual void SetUp() OVERRIDE;
 
  protected:
-  scoped_nsobject<HoverImageMenuButton> menu_button_;
-  scoped_nsobject<NSImage> normal_;
-  scoped_nsobject<NSImage> pressed_;
-  scoped_nsobject<NSImage> hovered_;
+  base::scoped_nsobject<HoverImageMenuButton> menu_button_;
+  base::scoped_nsobject<NSImage> normal_;
+  base::scoped_nsobject<NSImage> pressed_;
+  base::scoped_nsobject<NSImage> hovered_;
 
   DISALLOW_COPY_AND_ASSIGN(HoverImageMenuButtonTest);
 };