Print backtraces on FATAL log messages in debug mode.

base/debug_util.h

Index: base/debug_util.h
diff --git a/base/debug_util.h b/base/debug_util.h
index de49c43b633c17459ae756eca743cb086a2e04ab..3ca199cb1861096df370b5eae9154401c2aa476d 100644
--- a/base/debug_util.h
+++ b/base/debug_util.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2009 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.
 
@@ -9,10 +9,11 @@
 #ifndef BASE_DEBUG_UTIL_H_
 #define BASE_DEBUG_UTIL_H_
 
-#include "base/basictypes.h"
-
+#include <iostream>
 #include <vector>
 
+#include "base/basictypes.h"
+
 // A stacktrace can be helpful in debugging. For example, you can include a
 // stacktrace member in a object (probably around #ifndef NDEBUG) so that you
 // can later see where the given object was created from.
@@ -26,6 +27,9 @@ class StackTrace {
   // Print a backtrace to stderr
   void PrintBacktrace();
 
+  // Resolve backtrace to symbols and write to stream.
+  void OutputToStream(std::ostream* os);
+
  private:
   std::vector<void*> trace_;