Use top frame's origin when checking content settings for plugins.

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/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/prerender_messages.h"
@@ skipping 229 matching lines @@
 
 void ChromePluginPlaceholder::PluginListChanged() {
   if (!GetFrame() || !plugin())
     return;
   blink::WebDocument document = GetFrame()->top()->document();
   if (document.isNull())
     return;
 
   ChromeViewHostMsg_GetPluginInfo_Output output;
   std::string mime_type(GetPluginParams().mimeType.utf8());
+  blink::WebString top_origin = GetFrame()->top()->securityOrigin().toString();
   render_frame()->Send(
       new ChromeViewHostMsg_GetPluginInfo(routing_id(),
                                           GURL(GetPluginParams().url),
-                                          document.url(),
+                                          GURL(top_origin),
                                           mime_type,
                                           &output));
   if (output.status == status_)
     return;
   blink::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 95 matching lines @@
       .SetMethod<void (ChromePluginPlaceholder::*)()>(
            "hide", &ChromePluginPlaceholder::HideCallback)
       .SetMethod<void (ChromePluginPlaceholder::*)()>(
            "load", &ChromePluginPlaceholder::LoadCallback)
       .SetMethod<void (ChromePluginPlaceholder::*)()>(
            "didFinishLoading",
            &ChromePluginPlaceholder::DidFinishLoadingCallback)
       .SetMethod("openAboutPlugins",
                  &ChromePluginPlaceholder::OpenAboutPluginsCallback);
 }