Multi-select <select> in 'external popup window'

content/browser/web_contents/web_contents_view_win.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_win.h"
 
 #include "base/bind.h"
 #include "content/browser/renderer_host/render_view_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_win.h"
@@ skipping 227 matching lines @@
   GetWindowRect(hwnd(), &r);
   *out = gfx::Rect(r);
 }
 
 void WebContentsViewWin::ShowContextMenu(
     const content::ContextMenuParams& params) {
   if (delegate_.get())
     delegate_->ShowContextMenu(params);
 }
 
+void WebContentsViewWin::ShowPopupMenu(const gfx::Rect& bounds,
+                                       int item_height,
+                                       double item_font_size,
+                                       int selected_item,
+                                       const std::vector<WebMenuItem>& items,
+                                       bool right_aligned,
+                                       bool allow_multiple_selection) {
+  // External popup menus are only used on Mac and Android.
+  NOTIMPLEMENTED();
+}
+
 void WebContentsViewWin::StartDragging(const WebDropData& drop_data,
                                        WebKit::WebDragOperationsMask operations,
                                        const SkBitmap& image,
                                        const gfx::Point& image_offset) {
   drag_handler_ = new WebContentsDragWin(
       GetNativeView(),
       web_contents_,
       drag_dest_,
       base::Bind(&WebContentsViewWin::EndDragging, base::Unretained(this)));
   drag_handler_->StartDragging(drop_data, operations, image, image_offset);
@@ skipping 178 matching lines @@
   si.nMin = 1;
   si.nMax = 100;
   si.nPage = 10;
   si.nPos = 50;
 
   ::SetScrollInfo(hwnd(), SB_HORZ, &si, FALSE);
   ::SetScrollInfo(hwnd(), SB_VERT, &si, FALSE);
 
   return 1;
 }