Mac: ExternalPopupMenu::close should hide a showing popup menu.

content/browser/web_contents/web_contents_view_aura.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 "content/browser/web_contents/web_contents_view_aura.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
@@ skipping 1147 matching lines @@
                                         int item_height,
                                         double item_font_size,
                                         int selected_item,
                                         const std::vector<MenuItem>& items,
                                         bool right_aligned,
                                         bool allow_multiple_selection) {
   // External popup menus are only used on Mac and Android.
   NOTIMPLEMENTED();
 }
 
+void WebContentsViewAura::HidePopupMenu() {
+  // External popup menus are only used on Mac and Android.
+  NOTIMPLEMENTED();
+}
+
 void WebContentsViewAura::StartDragging(
     const DropData& drop_data,
     blink::WebDragOperationsMask operations,
     const gfx::ImageSkia& image,
     const gfx::Vector2d& image_offset,
     const DragEventSourceInfo& event_info) {
   aura::Window* root_window = GetNativeView()->GetRootWindow();
   if (!aura::client::GetDragDropClient(root_window)) {
     web_contents_->SystemDragEnded();
     return;
@@ skipping 357 matching lines @@
       event.location(),
       gfx::Screen::GetScreenFor(GetNativeView())->GetCursorScreenPoint(),
       ConvertAuraEventFlagsToWebInputEventModifiers(event.flags()));
   if (drag_dest_delegate_)
     drag_dest_delegate_->OnDrop();
   current_drop_data_.reset();
   return ConvertFromWeb(current_drag_op_);
 }
 
 }  // namespace content