Remove the DownloadItem::TogglePause() interface.

chrome/browser/download/download_shelf_context_menu.cc

Index: chrome/browser/download/download_shelf_context_menu.cc
diff --git a/chrome/browser/download/download_shelf_context_menu.cc b/chrome/browser/download/download_shelf_context_menu.cc
index 3e13650a0082a45a96ec1f1d6439a3b37ea51444..02ddccf0e14baa1998f0eaf2b174fa4f5a526399 100644
--- a/chrome/browser/download/download_shelf_context_menu.cc
+++ b/chrome/browser/download/download_shelf_context_menu.cc
@@ -116,8 +116,12 @@ void DownloadShelfContextMenu::ExecuteCommand(int command_id) {
       // 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);