[DISCARD] While getting plug-in info, use securityOrigin() of the top level frame

chrome/renderer/plugins/chrome_plugin_placeholder.cc

 // Copyright 2013 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/renderer/plugins/chrome_plugin_placeholder.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/prerender_messages.h"
 #include "chrome/common/render_messages.h"
@@ skipping 263 matching lines @@
 
 void ChromePluginPlaceholder::OnCancelledDownloadingPlugin() {
   SetMessage(
       l10n_util::GetStringFUTF16(IDS_PLUGIN_DOWNLOAD_CANCELLED, plugin_name_));
 }
 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 
 void ChromePluginPlaceholder::PluginListChanged() {
   if (!GetFrame() || !plugin())
     return;
-  WebDocument document = GetFrame()->top()->document();
-  if (document.isNull())
+  blink::WebSecurityOrigin top_level_origin =
+      GetFrame()->top()->securityOrigin();
+  if (top_level_origin.isNull())
     return;
 
   ChromeViewHostMsg_GetPluginInfo_Output output;
   std::string mime_type(GetPluginParams().mimeType.utf8());
   render_frame()->Send(
       new ChromeViewHostMsg_GetPluginInfo(routing_id(),
                                           GURL(GetPluginParams().url),
-                                          document.url(),
+                                          GURL(top_level_origin.toString()),
                                           mime_type,
                                           &output));
   if (output.status.value == status_->value)
     return;
   WebPlugin* new_plugin = ChromeContentRendererClient::CreatePlugin(
       render_frame(),  GetFrame(), GetPluginParams(), output);
   ReplacePlugin(new_plugin);
   if (!new_plugin) {
     PluginUMAReporter::GetInstance()->ReportPluginMissing(
         GetPluginParams().mimeType.utf8(), GURL(GetPluginParams().url));
@@ skipping 73 matching lines @@
   v8::Handle<v8::Object> global = context->Global();
   global->Set(gin::StringToV8(isolate, "plugin"),
               gin::CreateHandle(isolate, this).ToV8());
 }
 
 gin::ObjectTemplateBuilder ChromePluginPlaceholder::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
   return PluginPlaceholder::GetObjectTemplateBuilder(isolate).SetMethod(
       "openAboutPlugins", &ChromePluginPlaceholder::OpenAboutPluginsCallback);
 }