Add a new 'run_all_unittests' target in base

base/base.gyp

Index: base/base.gyp
diff --git a/base/base.gyp b/base/base.gyp
index e7d86242b580a72736bb8e14fe76e4ec926fa652..1777006139ad48e47cbb29398dc053754f0bbd91 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -140,12 +140,22 @@
       ],
     },
     {
+      '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',
@@ -295,6 +305,7 @@
         'base',
         'base_i18n',
         'base_static',
+        'run_all_unittests',
         'test_support_base',
         'third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../testing/gmock.gyp:gmock',