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

base/base.gypi

 # Copyright (c) 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 376 matching lines @@
                   # We need rt for clock_gettime().
                   '-lrt',
                 ],
               },
             }],
           ],
           'dependencies': [
             '../build/util/build_util.gyp:lastchange',
             '../build/linux/system.gyp:gtk',
             '../build/linux/system.gyp:nss',
+            'symbolize'
+          ],
+          'defines': [
+            'USE_SYMBOLIZE',
           ],
           'cflags': [
             '-Wno-write-strings',
           ],
           'export_dependent_settings': [
             '../build/linux/system.gyp:gtk',
           ],
         },],
         [ 'OS == "freebsd"', {
             'sources!': [
@@ skipping 188 matching lines @@
             'i18n/icu_util_nacl_win64.cc',
           ],
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
+    [ 'OS == "linux" or OS == "freebsd"', {
+      'targets': [
+        {
+          'target_name': 'symbolize',
+          'type': '<(library)',
+          'cflags': [
+            '-Wno-sign-compare',
+          ],
+          'sources': [
+            'third_party/symbolize/symbolize.cc',
+            'third_party/symbolize/demangle.cc',
+          ],
+        },
+      ],
+    }],
   ],
 }