Make printf and LOG output to cmd console for Windows

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index 58dc14b2bc0dc7e8f8df1a49d545598071899aee..4d76ab1f5170d86e479d12bfb8e9bd007a88ab05 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -530,6 +530,12 @@ static void ReleaseFreeMemoryThunk() {
       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)) {