Relanding the following revisions....

webkit/tools/test_shell/plugin_tests.cc

 // Copyright (c) 2006-2008 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 <string>
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 77 matching lines @@
 
   CopyTestPlugin();
 
   test_shell_->webView()->GetMainFrame()->ExecuteScript(refresh);
   test_shell_->webView()->GetMainFrame()->ExecuteScript(call_check);
   test_shell_->webView()->GetMainFrame()->GetContentAsPlainText(10000, &text);
   ASSERT_EQ(text, L"DONE");
 
   DeleteTestPlugin();
 }
+
+TEST_F(PluginTest, DefaultPluginLoadTest) {
+  std::string html = "\
+      <div id='result'>Test running....</div>\
+      <script>\
+      function onSuccess() {\
+        var result = document.getElementById('result');\
+        result.innerHTML = 'DONE';\
+      }\
+      </script>\
+      <DIV ID=PluginDiv>\
+      <object classid=\"clsid:9E8BC6CE-AF35-400c-ABF6-A3F746A1871D\">\
+      <embed type=\"application/chromium-test-default-plugin\"\
+        mode=\"np_embed\"\
+      ></embed>\
+      </object>\
+      </DIV>\
+      ";
+
+  test_shell_->webView()->GetMainFrame()->LoadHTMLString(
+      html, GURL("about:blank"));
+  test_shell_->WaitTestFinished();
+
+  std::wstring text;
+  test_shell_->webView()->GetMainFrame()->GetContentAsPlainText(10000, &text);
+
+  ASSERT_EQ(true, StartsWith(text, L"DONE", true));
+}