Import google-glog's Symbolize() and use it in debug_util_posix.cc.

base/debug_util_unittest.cc

 // 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.
 
 #include <sstream>
 #include <string>
 
 #include "base/debug_util.h"
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 73 matching lines @@
 #endif
 
   // Expect to find this function as well.
   // Note: This will fail if not linked with -rdynamic (aka -export_dynamic)
   EXPECT_TRUE(backtrace_message.find(__func__) != std::string::npos)
       << "Expected to find " << __func__ << " in backtrace:\n"
       << backtrace_message;
 
 #endif  // define(OS_MACOSX)
 }
+
+// The test is used for manual testing (i.e. see the raw output).
+// To run the test use the flags:
+// --gtest_filter='*DebugOutputToStream' --gtest_also_run_disabled_tests
+TEST(StackTrace, DISABLED_DebugOutputToStream) {
+  StackTrace trace;
+  std::ostringstream os;
+  trace.OutputToStream(&os);
+  LOG(INFO) << os.str();
+}
+
+// The test is used for manual testing. See the comment above.
+TEST(StackTrace, DISABLED_DebugPrintBacktrace) {
+  StackTrace().PrintBacktrace();
+}