Do not abort the process if thread owning the log mutex has crashed.

base/logging.cc

Index: base/logging.cc
diff --git a/base/logging.cc b/base/logging.cc
index b5af671eb4f465940846f4be8156005bc2a70a93..27f2724f0f59999a3112b07e7fb362778f9a9b2e 100644
--- a/base/logging.cc
+++ b/base/logging.cc
@@ -485,7 +485,12 @@ LogMessage::~LogMessage() {
 
 #if defined(OS_WIN)
       DWORD r = ::WaitForSingleObject(log_mutex, INFINITE);
-      DCHECK(r != WAIT_ABANDONED);
+      if (r == WAIT_ABANDONED) {
+        // Do not abort the process here. UI tests might be crashy sometimes,
+        // and aborting the test binary only makes the problem worse.
+        // For more info see http://crbug.com/18028.
+        LOG(ERROR) << "Thread owning the log mutex has crashed.";

[cpu_(ooo_6.6-7.5), 2009/07/31 23:04:05]

hmmm ... you are calling LOG()which ends up back here?

I don't see anybody calling back into log here, I think for a a good reason.
Probably that DCHECK was also wrong.

+      }
 #elif defined(OS_POSIX)
       pthread_mutex_lock(&log_mutex);
 #endif