Adds a flag "use_instrumented_libraries" and corresponding target with 2 simple libs

third_party/instrumented_libraries/instrumented_libraries.gyp

+# Copyright (c) 2012 The Chromium Authors. All rights reserved.

[Alexander Potapenko, 2013/10/29 13:36:11]

It's 2013 already :)

[alextaran1, 2013/10/30 11:16:29]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'targets': [
+    {
+      'target_name': 'instrumented_libraries',
+      'type': 'none',
+      'variables': {
+         'prune_self_dependency': 1,
+      },
+      'dependencies': [
+        'libpng12-0',
+        'libxau6',
+      ],
+      'actions': [
+        {
+          'action_name': 'fix_rpaths',
+          'inputs': [
+            'fix_rpaths'
+          ],
+          'outputs': [
+            '<(PRODUCT_DIR)/instrumented_libraries/asan/rpaths.fixed.txt'
+          ],
+          'action': ['./fix_rpaths', '<(PRODUCT_DIR)/instrumented_libraries/asan']
+        },
+      ],
+    },
+    {
+      'target_name': 'libpng12-0',
+      'type': 'none',
+      'dependencies=': [

[Alexander Potapenko, 2013/10/29 13:36:11]

No need to have an empty dependency list, please delete it.
(also, what's 'dependencies='?)

[Alexander Potapenko, 2013/10/29 13:57:04]

Please disregard.

[alextaran1, 2013/10/30 11:16:29]

Disregarded. It's needed to remove cyclic dependency. This simple string removes
all dependencies, after that this target depends on nothing (as it should be).

+      ],
+      'actions': [
+        {
+          'action_name': '<(_target_name)',
+          'inputs': [
+            'download_build_install',
+          ],
+          'outputs': [
+            '<(PRODUCT_DIR)/instrumented_libraries/asan/<(_target_name).txt'
+          ],
+          'action': ['./download_build_install', '-i', '<(PRODUCT_DIR)/instrumented_libraries/asan', '-l', '<(_target_name)', '-m', '<(INTERMEDIATE_DIR)']
+        },
+      ],
+    },
+    {
+      'target_name': 'libxau6',

[Alexander Potapenko, 2013/10/29 13:36:11]

There's too much boilerplate for each library. I wonder if we can reduce it (you
don't have to do anything about it right now).

[alextaran1, 2013/10/30 11:16:29]

Done nothing.
In future, we'll pass different build options for different libraries through
this gyp-file.
This boilerplate seems like minimal amount of code for building a typical
library.
Probably, we can get rid of some parts (or find more appropriate solution), but
it's not obvious for me now.

+      'type': 'none',
+      'dependencies=': [
+      ],
+      'actions': [
+        {
+          'action_name': '<(_target_name)',
+          'inputs': [
+            'download_build_install',
+          ],
+          'outputs': [
+            '<(PRODUCT_DIR)/instrumented_libraries/asan/<(_target_name).txt'
+          ],
+          'action': ['./download_build_install', '-i', '<(PRODUCT_DIR)/instrumented_libraries/asan', '-l', '<(_target_name)', '-m', '<(INTERMEDIATE_DIR)']
+        },
+      ],
+    },
+  ],
+}