mac: Update clients of scoped_nsobject.h.

ui/base/cocoa/controls/hover_image_menu_button_unittest.mm

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ui/base/cocoa/controls/hover_image_menu_button.h"
 
 #include "base/mac/foundation_util.h"
 #import "testing/gtest_mac.h"
 #import "ui/base/cocoa/controls/hover_image_menu_button_cell.h"
 #import "ui/base/test/ui_cocoa_test_helper.h"
 
 namespace ui {
 
 namespace {
 
 // Test initialization and display of the NSPopUpButton that shows the drop-
 // down menu. Don't try to show the menu, since it will block the thread.
 class HoverImageMenuButtonTest : public CocoaTest {
  public:
   HoverImageMenuButtonTest() {}
 
   // CocoaTest override:
   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);
 };
 
 void HoverImageMenuButtonTest::SetUp() {
   menu_button_.reset(
       [[HoverImageMenuButton alloc] initWithFrame:NSMakeRect(0, 0, 50, 30)
                                         pullsDown:YES]);
 
   normal_.reset([base::mac::ObjCCastStrict<NSImage>(
@@ skipping 124 matching lines @@
   EXPECT_FALSE([menu_button_ needsDisplay]);
 
   [menu_button_ mouseExited:nil];
   EXPECT_TRUE([menu_button_ needsDisplay]);
   EXPECT_NSEQ(normal_, [[menu_button_ cell] imageToDraw]);
   [menu_button_ display];
   EXPECT_FALSE([menu_button_ needsDisplay]);
 }
 
 }  // namespace ui