Add a new 'run_all_unittests' target in base

base/base.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 122 matching lines @@
             'python',
             'android/jni_generator/jni_generator.py',
             '-o',
             '<@(_inputs)',
             '<@(_outputs)',
           ],
         }
       ],
     },
     {
+      'target_name': 'run_all_unittests',
+      'type': 'static_library',
+      'dependencies': [
+        'test_support_base',
+      ],
+      'export_dependent_settings': [
+        'test_support_base',

[Ryan Sleevi, 2012/03/16 02:45:25]

Could you explain the motivation for the export_dependent_settings? I can guess
at a few reasons, but it might be easier just to have you explain.

[akalin, 2012/03/16 06:59:20]

Actually, come to think of it, I don't think it's needed, since one simply
includes run_all_unittests to get a 'main' symbol linked in.

I'm a bit fuzzy on when it's appropriate to use export_dependent_settings; does
that sound right?

+      ],
+      'sources': [
+        'test/run_all_unittests.cc',
+      ],
+    },
+    {
       'target_name': 'base_unittests',
       'type': 'executable',
       'sources': [
-        # Infrastructure files.
-        'test/run_all_unittests.cc',
-
         # Tests.
         'android/jni_android_unittest.cc',
         'android/scoped_java_ref_unittest.cc',
         'at_exit_unittest.cc',
         'atomicops_unittest.cc',
         'base64_unittest.cc',
         'bind_helpers_unittest.cc',
         'bind_unittest.cc',
         'bind_unittest.nc',
         'bits_unittest.cc',
@@ skipping 129 matching lines @@
         'win/scoped_bstr_unittest.cc',
         'win/scoped_comptr_unittest.cc',
         'win/scoped_variant_unittest.cc',
         'win/win_util_unittest.cc',
         'win/wrapped_window_proc_unittest.cc',
       ],
       'dependencies': [
         'base',
         'base_i18n',
         'base_static',
+        'run_all_unittests',
         'test_support_base',
         'third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
       ],
       'includes': ['../build/nocompile.gypi'],
       'variables': {
          # TODO(ajwong): Is there a way to autodetect this?
@@ skipping 331 matching lines @@
              # treated as weak imports in dependents, who still must
              # #include closure_blocks_leopard_compat.h to get weak imports.
              'type': 'none',
            }],
          ],
        },
      ],
    }],
   ],
 }