mac: Update clients of scoped_nsobject.h.

ui/app_list/cocoa/apps_collection_view_drag_manager.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/app_list/cocoa/apps_collection_view_drag_manager.h"
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #import "ui/app_list/cocoa/apps_grid_controller.h"
 #import "ui/app_list/cocoa/apps_grid_view_item.h"
@@ skipping 41 matching lines @@
   if ((self = [super init])) {
     cellSize_ = cellSize;
     rows_ = rows;
     columns_ = columns;
     gridController_ = gridController;
   }
   return self;
 }
 
 - (NSCollectionView*)makePageWithFrame:(NSRect)pageFrame {
-  scoped_nsobject<GridCollectionView> itemCollectionView(
+  base::scoped_nsobject<GridCollectionView> itemCollectionView(
       [[GridCollectionView alloc] initWithFrame:pageFrame]);
   [itemCollectionView setFactory:self];
   [itemCollectionView setMaxNumberOfRows:rows_];
   [itemCollectionView setMinItemSize:cellSize_];
   [itemCollectionView setMaxItemSize:cellSize_];
   [itemCollectionView setSelectable:YES];
   [itemCollectionView setFocusRingType:NSFocusRingTypeNone];
   [itemCollectionView setBackgroundColors:
       [NSArray arrayWithObject:[NSColor clearColor]]];
 
-  scoped_nsobject<AppsGridViewItem> itemPrototype(
+  base::scoped_nsobject<AppsGridViewItem> itemPrototype(
       [[AppsGridViewItem alloc] initWithSize:cellSize_]);
   [[itemPrototype button] setTarget:gridController_];
   [[itemPrototype button] setAction:@selector(onItemClicked:)];
 
   [itemCollectionView setItemPrototype:itemPrototype];
   return itemCollectionView.autorelease();
 }
 
 - (void)onMouseDownInPage:(NSCollectionView*)page
                 withEvent:(NSEvent*)theEvent {
@@ skipping 169 matching lines @@
 
 - (void)mouseUp:(NSEvent*)theEvent {
   [factory_ onMouseUp:theEvent];
 }
 
 - (BOOL)acceptsFirstResponder {
   return NO;
 }
 
 @end