Revert of Reland https://codereview.chromium.org/298333007/: Enable mac_strip_release under ASan on OSX. Remo… (patchset #1 id:1 of https://codereview.chromium.org/517803004/)

Reason for revert:
Breaks *lots* of browser_tests on Mac ASan. See e.g.:
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Mac%20ASan%2064%20Tests%20%281%29&number=2036
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Mac%20ASan%2064%20Tests%20%282%29&number=2600
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Mac%20ASan%2064%20Tests%20%283%29&number=2424

Original issue's description:
> Reland https://codereview.chromium.org/298333007/: Enable mac_strip_release under ASan on OSX. Remove the .saves files.
>
> The reasons for reverting the CL hadn't been documented. I'm going to reland and update the bugs.
>
> Unce upon a time the ASan runtime library used to be statically linked into
> the executables on OSX.
> Because that library provided a number of API functions needed by the shared
> libraries, we had custom ASan-specific .saves files that told the `strip`
> utility to preserve those functions when stripping the executables.
>
> Then ASan switched to using dynamic runtime library, which instantly broke the
> stripping step, because the executables weren't necessarily referencing all the
> ASan API functions (issue 242503).
> As a result, stripping has been disabled, and we haven't had .dSYM debug info
> for ASan builds for more than a year now (issue 148383).
>
> Because the ASan API functions are now undefined in the executables, it's
> actually senseless to use the .saves files to preserve those functions.
> This CL deletes the .saves files and turns mac_strip_release on for ASan
> builds.
>
> BUG=148383, 242503, 170739, 166857
> TBR=mark@chromium.org
>
> Committed: https://chromium.googlesource.com/chromium/src/+/d5319a149964f953e7506c1ff2b33f90974d19ea

TBR=mark@chromium.org,glider@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=148383, 242503, 170739, 166857

Review URL: https://codereview.chromium.org/522743003

Cr-Commit-Position: refs/heads/master@{#292885}

2 files changed, 43 insertions, 2 deletions

diff --git a/build/asan.saves b/build/asan.saves
new file mode 100644
index 0000000..0c4e4ed
--- /dev/null
+++ b/build/asan.saves
@@ -0,0 +1,23 @@
+# 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
+___asan_handle_no_return
+___asan_register_global
+___asan_register_globals
+___asan_unregister_globals
+___asan_report_load1
+___asan_report_load2
+___asan_report_load4
+___asan_report_load8
+___asan_report_load16
+___asan_report_store1
+___asan_report_store2
+___asan_report_store4
+___asan_report_store8
+___asan_report_store16
diff --git a/build/common.gypi b/build/common.gypi
index c48fc71..71d9694 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -2141,8 +2141,9 @@
         'clang%': 1,
       }],
       ['asan==1 and OS=="mac"', {
-        # Strip and produce the .dSYM files.
-        'mac_strip_release': 1,
+        # TODO(glider): we do not strip ASan binaries until the dynamic ASan
+        # runtime is fully adopted. See http://crbug.com/242503.
+        'mac_strip_release': 0,
       }],
       ['tsan==1', {
         'use_custom_libcxx%': 1,
@@ -4985,6 +4986,16 @@
                 ],
               },
             ],
+            'conditions': [
+              ['asan==1', {
+                'variables': {
+                 'asan_saves_file': 'asan.saves',
+                },
+                'xcode_settings': {
+                  'CHROMIUM_STRIP_SAVE_FILE': '<(asan_saves_file)',
+                },
+              }],
+            ],
             'target_conditions': [
               ['mac_pie==1 and release_valgrind_build==0', {
                 # Turn on position-independence (ASLR) for executables. When
@@ -5024,6 +5035,13 @@
                           # additional flags are added with STRIPFLAGS.
                           'STRIPFLAGS': '-x',
                         }],  # _type=="shared_library" or _type=="loadable_module"
+                        ['_type=="executable"', {
+                          'conditions': [
+                            ['asan==1', {
+                              'STRIPFLAGS': '-s $(CHROMIUM_STRIP_SAVE_FILE)',
+                            }]
+                          ],
+                        }],  # _type=="executable" and asan==1
                       ],  # target_conditions
                     },  # xcode_settings
                   },  # configuration "Release"