mac: Update clients of scoped_nsobject.h.

chrome/browser/ui/cocoa/download/download_shelf_controller.mm

 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/download/download_shelf_controller.h"
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/download/download_util.h"
@@ skipping 282 matching lines @@
     skipFirst = NO;
   }
 }
 
 - (void)layoutItems {
   [self layoutItems:NO];
 }
 
 - (void)addDownloadItem:(DownloadItem*)downloadItem {
   DCHECK([NSThread isMainThread]);
-  scoped_nsobject<DownloadItemController> controller(
+  base::scoped_nsobject<DownloadItemController> controller(
       [[DownloadItemController alloc] initWithDownload:downloadItem
                                                  shelf:self
                                              navigator:navigator_]);
   [self add:controller.get()];
 }
 
 - (void)add:(DownloadItemController*)controller {
   DCHECK([NSThread isMainThread]);
   [self cancelAutoClose];
   shouldCloseOnMouseExit_ = NO;
@@ skipping 188 matching lines @@
   }
 
   // Set the tracking off to create a new tracking area for the control.
   // When changing the bounds/frame on a HoverButton, the tracking isn't updated
   // correctly, it needs to be turned off and back on.
   [hoverCloseButton_ setTrackingEnabled:NO];
   [hoverCloseButton_ setFrame:bounds];
   [hoverCloseButton_ setTrackingEnabled:YES];
 }
 @end