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

chrome/renderer/chrome_content_renderer_client.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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
@@ skipping 558 matching lines @@
     bool guest_view_api_available = false;
     extension_dispatcher_->script_context_set().ForEach(
         render_frame->GetRenderView(),
         base::Bind(&IsGuestViewApiAvailableToScriptContext,
                    &guest_view_api_available));
     if (guest_view_api_available)
       return false;
   }
 #endif
 
+  const WebSecurityOrigin top_level_security_origin =
+      frame->top()->securityOrigin();
+  GURL top_level_frame_origin_url;
+  // TODO(lazyboy): What happens if |top_level_security_origin| is NULL?
+  if (!top_level_security_origin.isNull())
+    top_level_frame_origin_url = GURL(top_level_security_origin.toString());
+
   ChromeViewHostMsg_GetPluginInfo_Output output;
 #if defined(ENABLE_PLUGINS)
   render_frame->Send(new ChromeViewHostMsg_GetPluginInfo(
       render_frame->GetRoutingID(), GURL(params.url),
-      frame->top()->document().url(), orig_mime_type, &output));
+      top_level_frame_origin_url, orig_mime_type, &output));
 
   if (output.plugin.type == content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN)
     return false;
 #else
   output.status.value = ChromeViewHostMsg_GetPluginInfo_Status::kNotFound;
 #endif
   *plugin = CreatePlugin(render_frame, frame, params, output);
   return true;
 }
 
@@ skipping 976 matching lines @@
   if (mime_type == content::kBrowserPluginMimeType) {
     return new extensions::ExtensionsGuestViewContainer(render_frame);
   } else {
     return new extensions::MimeHandlerViewContainer(
         render_frame, mime_type, original_url);
   }
 #else
   return NULL;
 #endif
 }