Remove the DownloadItem::TogglePause() interface.

chrome/browser/download/download_shelf_context_menu.cc

 // 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.
 
 #include "chrome/browser/download/download_shelf_context_menu.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_crx_util.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_prefs.h"
@@ skipping 98 matching lines @@
         prefs->DisableAutoOpenBasedOnExtension(path);
       break;
     }
     case CANCEL:
       download_model_->CancelTask();
       break;
     case TOGGLE_PAUSE:
       // It is possible for the download to complete before the user clicks the
       // menu item, recheck if the download is in progress state before toggling
       // pause.
-      if (download_item_->IsPartialDownload())
-        download_item_->TogglePause();
+      if (download_item_->IsPartialDownload()) {
+        if (download_item_->IsPaused())
+          download_item_->Resume();
+        else
+          download_item_->Pause();
+      }
       break;
     case DISCARD:
       download_item_->Delete(DownloadItem::DELETE_DUE_TO_USER_DISCARD);
       break;
     case KEEP:
       download_item_->DangerousDownloadValidated();
       break;
     case LEARN_MORE_SCANNING: {
 #if defined(FULL_SAFE_BROWSING)
       using safe_browsing::DownloadProtectionService;
@@ skipping 134 matching lines @@
   malicious_download_menu_model_->AddItemWithStringId(
       DISCARD, IDS_DOWNLOAD_MENU_DISCARD);
   malicious_download_menu_model_->AddItemWithStringId(
       KEEP, IDS_DOWNLOAD_MENU_KEEP);
   malicious_download_menu_model_->AddSeparator(ui::NORMAL_SEPARATOR);
   malicious_download_menu_model_->AddItemWithStringId(
       LEARN_MORE_SCANNING, IDS_DOWNLOAD_MENU_LEARN_MORE_SCANNING);
 
   return malicious_download_menu_model_.get();
 }