Temporarily turn on --debug-plugin-loading in PluginTest.*.

chrome/browser/plugin_test.cc

 // Copyright (c) 2011 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.
 
 // Tests for the top plugins to catch regressions in our plugin host code, as
 // well as in the out of process code.  Currently this tests:
 //  Flash
 //  Real
 //  QuickTime
 //  Windows Media Player
@@ skipping 86 matching lines @@
       // the new plugin.
       launch_arguments_.AppendSwitch(switches::kUseOldWMPPlugin);
     } else if (strcmp(test_info->name(), "FlashSecurity") == 0) {
       launch_arguments_.AppendSwitchASCII(switches::kTestSandbox,
                                           "security_tests.dll");
     }
 #endif  // defined(OS_WIN)
 
     launch_arguments_.AppendSwitch(switches::kAllowOutdatedPlugins);
     launch_arguments_.AppendSwitch(switches::kAlwaysAuthorizePlugins);
+    // TODO(rsesek): Remove after done debugging.
+    launch_arguments_.AppendSwitch(switches::kDebugPluginLoading);
 
     UITest::SetUp();
   }
 
   void TestPlugin(const std::string& test_case,
                   const std::string& query,
                   int timeout,
                   bool mock_http) {
     GURL url = GetTestUrl(test_case, query, mock_http);
     NavigateToURL(url);
@@ skipping 217 matching lines @@
 TEST_F(PluginInstallerDownloadTest, PluginInstallerDownloadPathTest) {
   MessageLoop loop(MessageLoop::TYPE_IO);
   Start();
   loop.Run();
 
   EXPECT_TRUE(success());
   EXPECT_TRUE(initial_download_path().BaseName().value() ==
               final_download_path().BaseName().value());
 }
 #endif  // defined(OS_WIN)