[NTP] Fixed usage of NewTabPage.ActionAndroid histogram

ios/chrome/browser/ui/bookmarks/bookmark_home_tablet_ntp_controller.mm

 // Copyright 2014 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 "ios/chrome/browser/ui/bookmarks/bookmark_home_tablet_ntp_controller.h"
 
 #include <memory>
 
 #include "base/ios/block_types.h"
 #import "base/ios/weak_nsobject.h"
@@ skipping 418 matching lines @@
 }
 
 #pragma mark - private methods
 
 - (void)loadURL:(const GURL&)url {
   if (url == GURL() || url.SchemeIs(url::kJavaScriptScheme))
     return;
 
   new_tab_page_uma::RecordAction(self.browserState,
                                  new_tab_page_uma::ACTION_OPENED_BOOKMARK);
-  base::RecordAction(base::UserMetricsAction("MobileNTPBookmark"));
+  base::RecordAction(
+      base::UserMetricsAction("MobileBookmarkManagerEntryOpened"));
   [_loader loadURL:url
                referrer:web::Referrer()
              transition:ui::PAGE_TRANSITION_AUTO_BOOKMARK
       rendererInitiated:NO];
 }
 
 #pragma mark - Views
 
 - (void)loadWaitingView {
   DCHECK(!self.waitForModelView);
@@ skipping 886 matching lines @@
 }
 
 - (NSIndexPath*)indexPathForCell:(UICollectionViewCell*)cell {
   DCHECK([self primaryView].collectionView);
   NSIndexPath* indexPath =
       [[self primaryView].collectionView indexPathForCell:cell];
   return indexPath;
 }
 
 @end