Add some logging to a flakey browsertest to debug.

chrome/test/in_process_browser_test.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 "chrome/test/in_process_browser_test.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 106 matching lines @@
   // otherwise they'll try to use unit_test.exe.
   std::wstring subprocess_path;
   PathService::Get(base::FILE_EXE, &subprocess_path);
   FilePath fp_subprocess_path = FilePath::FromWStringHack(subprocess_path);
   subprocess_path = fp_subprocess_path.DirName().ToWStringHack();
   file_util::AppendToPath(&subprocess_path,
                           chrome::kBrowserProcessExecutablePath);
   command_line->AppendSwitchWithValue(switches::kBrowserSubprocessPath,
                                       subprocess_path);
 
+  // Enable warning level logging so that we can see when bad stuff happens.
+  command_line->AppendSwitch(switches::kEnableLogging);
+  command_line->AppendSwitchWithValue(switches::kLoggingLevel,
+                                      IntToWString(1));  // warning
+
   SandboxInitWrapper sandbox_wrapper;
   MainFunctionParams params(*command_line, sandbox_wrapper, NULL);
   params.ui_task =
       NewRunnableMethod(this, &InProcessBrowserTest::RunTestOnMainThreadLoop);
 
   scoped_refptr<net::RuleBasedHostMapper> host_mapper(
       new net::RuleBasedHostMapper());
   ConfigureHostMapper(host_mapper.get());
   net::ScopedHostMapper scoped_host_mapper(host_mapper.get());
   BrowserMain(params);
@@ skipping 106 matching lines @@
 
   GTEST_NONFATAL_FAILURE_("Timed-out");
 
   // Start the timeout timer to prevent hangs.
   MessageLoopForUI::current()->PostDelayedTask(FROM_HERE,
       NewRunnableMethod(this, &InProcessBrowserTest::TimedOut),
       kSubsequentTimeoutInMS);
 
   MessageLoopForUI::current()->Quit();
 }