Add NSLogTestEventListener to support running tests on iOS 6 devices.

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/command_line.h"
@@ skipping 137 matching lines @@
   Initialize();
   std::string client_func =
       CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kTestChildProcess);
 
   // Check to see if we are being run as a client process.
   if (!client_func.empty())
     return multi_process_function_list::InvokeChildProcessTest(client_func);
 #if defined(OS_IOS)
   base::test_listener_ios::RegisterTestEndListener();
+  base::test_listener_ios::RegisterNSLogListenerIfNecessary();
 #endif
   int result = RUN_ALL_TESTS();
 
 #if defined(OS_MACOSX)
   // This MUST happen before Shutdown() since Shutdown() tears down
   // objects (such as NotificationService::current()) that Cocoa
   // objects use to remove themselves as observers.
   scoped_pool.Recycle();
 #endif
 
@@ skipping 74 matching lines @@
   icu_util::Initialize();
 
   CatchMaybeTests();
   ResetCommandLine();
 
   TestTimeouts::Initialize();
 }
 
 void TestSuite::Shutdown() {
 }