If the 'asan' GYP variable is set to 1 on Mac, do not strip the __asan_init symbol from the binaries.

Review URL: http://codereview.chromium.org/7828043

git-svn-id: http://src.chromium.org/svn/trunk/src/build@99371 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

asan.saves

@@ -0,0 +1,9 @@
+# Copyright (c) 2011 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.
+
+# This file lists symbols that should not be stripped by Xcode from the binaries
+# built for Mac OS X using AddressSanitizer
+# (http://dev.chromium.org/developers/testing/addresssanitizer).
+
+___asan_init

common.gypi

@@ -1736,6 +1736,16 @@
                 ],
               },
             ],
+            'conditions': [
+              ['asan==1', {
+                'variables': {
+                 'asan_saves_file': 'asan.saves',
+                },
+                'xcode_settings': {
+                  'CHROMIUM_STRIP_SAVE_FILE': '<(asan_saves_file)'
+                },
+              }],
+            ],
           }],
           ['_type=="executable" and release_valgrind_build==0', {
             # Turn on position-independence (ASLR) for executables. When PIE