Make h264_parser_unittest compilable under linux.

content/content_tests.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'test_support_content',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
@@ skipping 701 matching lines @@
               }],
               ['target_arch != "arm" and (OS=="linux" or chromeos == 1)', {
                 'include_dirs': [
                   '<(DEPTH)/third_party/libva',
                 ],
               }],
             ],
           },
         ]
     }],
-    ['chromeos == 1', {
+    ['chromeos == 1 or OS == "linux"', {
       'targets': [
         {
           'target_name': 'h264_parser_unittest',
           'type': 'executable',
           'dependencies': [
             'content_common',
+            '../base/base.gyp:base',
             '../testing/gtest.gyp:gtest',
           ],
           'sources': [
             'common/gpu/media/h264_parser_unittest.cc',
           ],
         }
       ],
     }],
     # Special target to wrap a gtest_target_type==shared_library
     # content_unittests into an android apk for execution.
@@ skipping 76 matching lines @@
                 '-buildfile',
                 '<(DEPTH)/content/shell/android/javatests/content_shell_test_apk.xml',
               ]
             }
           ],
         },
       ],
     }],
   ],
 }