Elim ActivateAppListItem, ChromeAppListItem

ui/app_list/cocoa/apps_grid_controller.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_grid_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "ui/app_list/app_list_model.h"
 #include "ui/app_list/app_list_model_observer.h"
 #include "ui/app_list/app_list_view_delegate.h"
@@ skipping 364 matching lines @@
 
   visiblePage_ = newPage;
   [paginationObserver_ selectedPageChanged:newPage];
   [paginationObserver_ pageVisibilityChanged];
 }
 
 - (void)onItemClicked:(id)sender {
   for (size_t i = 0; i < [items_ count]; ++i) {
     AppsGridViewItem* item = [self itemAtIndex:i];
     if ([[item button] isEqual:sender])
-      delegate_->ActivateAppListItem([item model], 0);
+      [item model]->Activate(0);
   }
 }
 
 - (AppsGridViewItem*)itemAtPageIndex:(size_t)pageIndex
                          indexInPage:(size_t)indexInPage {
   return base::mac::ObjCCastStrict<AppsGridViewItem>(
       [[self collectionViewAtPageIndex:pageIndex] itemAtIndex:indexInPage]);
 }
 
 - (AppsGridViewItem*)itemAtIndex:(size_t)itemIndex {
@@ skipping 274 matching lines @@
     return [self moveSelectionByDelta:-kItemsPerPage];
 
   if (command == @selector(pageDown:) ||
       command == @selector(scrollPageDown:))
     return [self moveSelectionByDelta:kItemsPerPage];
 
   return NO;
 }
 
 @end