Ensure MimeHandlerView plugins load properly with long URLs

extensions/browser/guest_view/mime_handler_view/mime_handler_view_browsertest.cc

 // Copyright 2014 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 "base/base_paths.h"
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/test/browser_test_utils.h"
@@ skipping 68 matching lines @@
   RunTestWithUrl(GURL(kDataUrlCsv));
 }
 
 IN_PROC_BROWSER_TEST_F(MimeHandlerViewTest, EmbeddedDataUrlObject) {
   RunTest("test_embedded_data_url_object.html");
 }
 
 IN_PROC_BROWSER_TEST_F(MimeHandlerViewTest, EmbeddedDataUrlEmbed) {
   RunTest("test_embedded_data_url_embed.html");
 }
+
+IN_PROC_BROWSER_TEST_F(MimeHandlerViewTest, EmbeddedDataUrlLong) {
+  RunTest("test_embedded_data_url_long.html");
+}