make debug mode ~20% faster on linux

content/common/set_process_title.cc

Index: content/common/set_process_title.cc
diff --git a/content/common/set_process_title.cc b/content/common/set_process_title.cc
index 99eb243bba16345dd29f740f854c35f7caff4b16..28769e2628d224e112e4cc4a34b5f2d25f66db7e 100644
--- a/content/common/set_process_title.cc
+++ b/content/common/set_process_title.cc
@@ -42,8 +42,6 @@ void SetProcessTitleFromCommandLine(const char** main_argv) {
   bool have_argv0 = false;
 
 #if defined(OS_LINUX)
-  DCHECK_EQ(base::PlatformThread::CurrentId(), getpid());

[piman, 2014/05/20 05:09:22]

nit: maybe DCHECK_EQ(gettid(), getpid()); ?

I think the goal of the DCHECK is to verify we're on the main thread (but before
any MessageLoop is created or anything), otherwise things would be racy.

-
   if (main_argv)
     setproctitle_init(main_argv);