Add a new 'run_all_unittests' target in base

sync/sync.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,
   },
   'targets': [
     # The core sync library.
@@ skipping 306 matching lines @@
     },
 
     # The unit test executable for sync tests.  Currently this isn't
     # automatically run, as there is already a sync_unit_tests
     # executable in chrome.gyp; this is just to make sure that all the
     # link-time dependencies for the files in the targets above
     # resolve.
     #
     # TODO(akalin): Rename this to sync_unit_tests once we've moved
     # everything from chrome.gyp.
-    #
-    # TODO(akalin): Make base.gyp have a test_main target that
-    # includes run_all_unittests.cc and the possible tcmalloc
-    # dependency and use that everywhere.
     {
       'target_name': 'sync_unit_tests_canary',
       'type': 'executable',
-      'sources': [
-        '../base/test/run_all_unittests.cc',
-      ],
       'dependencies': [
+        '../base/base.gyp:run_all_unittests',
         'sync_tests',
       ],
 
       # TODO(akalin): This is needed because histogram.cc uses
       # leak_annotations.h, which pulls this in.  Make 'base'
       # propagate this dependency.
       'conditions': [
         ['OS=="linux" and linux_use_tcmalloc==1', {
           'dependencies': [
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
       ],
     },
   ],
 }