Make printf and LOG output to cmd console for Windows

content/app/content_main_runner.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 "content/public/app/content_main_runner.h"
 
 #include <stdlib.h>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/at_exit.h"
@@ skipping 512 matching lines @@
     completed_basic_startup_ = true;
 
     const CommandLine& command_line = *CommandLine::ForCurrentProcess();
     std::string process_type =
         command_line.GetSwitchValueASCII(switches::kProcessType);
 
     if (!GetContentClient())
       SetContentClient(&empty_content_client_);
     ContentClientInitializer::Set(process_type, delegate_);
 
+#if defined(OS_WIN)
+    // Route stdio to parent console (if any) or create one.
+    if (command_line.HasSwitch(switches::kEnableLogging))
+      base::RouteStdioToConsole();
+#endif
+
     // Enable startup tracing asap to avoid early TRACE_EVENT calls being
     // ignored.
     if (command_line.HasSwitch(switches::kTraceStartup)) {
       base::debug::TraceLog::GetInstance()->SetEnabled(
           command_line.GetSwitchValueASCII(switches::kTraceStartup));
     }
 
 #if defined(OS_MACOSX)
     // We need to allocate the IO Ports before the Sandbox is initialized or
     // the first instance of SystemMonitor is created.
@@ skipping 160 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 };
 
 // static
 ContentMainRunner* ContentMainRunner::Create() {
   return new ContentMainRunnerImpl();
 }
 
 }  // namespace content