Print stack traces in child processes when browser tests failed.

base/test/test_suite.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 "base/test/test_suite.h"
 
 #include "base/at_exit.h"
 #include "base/base_paths.h"
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/stack_trace.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
+#include "base/process/launch.h"
 #include "base/process/memory.h"
 #include "base/test/gtest_xml_unittest_result_printer.h"
 #include "base/test/gtest_xml_util.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/multiprocess_test.h"
 #include "base/test/test_switches.h"
 #include "base/test/test_timeouts.h"
 #include "base/time/time.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 275 matching lines @@
   settings.log_file = log_filename.value().c_str();
   settings.delete_old = logging::DELETE_OLD_LOG_FILE;
   logging::InitLogging(settings);
   // We want process and thread IDs because we may have multiple processes.
   // Note: temporarily enabled timestamps in an effort to catch bug 6361.
   logging::SetLogItems(true, true, true, true);
 #endif  // else defined(OS_ANDROID)
 
   CHECK(debug::EnableInProcessStackDumping());
 #if defined(OS_WIN)
+  RouteStdioToConsole(true);
   // Make sure we run with high resolution timer to minimize differences
   // between production code and test code.
   Time::EnableHighResolutionTimer(true);
 #endif  // defined(OS_WIN)
 
   // In some cases, we do not want to see standard error dialogs.
   if (!debug::BeingDebugged() &&
       !CommandLine::ForCurrentProcess()->HasSwitch("show-error-dialogs")) {
     SuppressErrorDialogs();
     debug::SetSuppressDebugUI(true);
@@ skipping 24 matching lines @@
 
   TestTimeouts::Initialize();
 
   trace_to_file_.BeginTracingFromCommandLineOptions();
 }
 
 void TestSuite::Shutdown() {
 }
 
 }  // namespace base