Implement "Key Presence" step in "Encrypted Block Encounted" algorithm in EME.

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 394 matching lines @@
         '../webkit/fileapi/mock_file_system_options.cc',
         '../webkit/fileapi/mock_file_system_options.h',
         '../webkit/fileapi/obfuscated_file_util_unittest.cc',
         '../webkit/fileapi/sandbox_mount_point_provider_unittest.cc',
         '../webkit/fileapi/test_file_set.cc',
         '../webkit/fileapi/test_file_set.h',
         '../webkit/fileapi/webfilewriter_base_unittest.cc',
         '../webkit/media/buffered_data_source_unittest.cc',
         '../webkit/media/buffered_resource_loader_unittest.cc',
         '../webkit/media/cache_util_unittest.cc',
+        '../webkit/media/crypto/proxy_decryptor_unittest.cc',
         '../webkit/media/skcanvas_video_renderer_unittest.cc',
         '../webkit/media/test_response_generator.cc',
         '../webkit/media/test_response_generator.h',
         '../webkit/mocks/mock_weburlloader.cc',
         '../webkit/mocks/mock_weburlloader.h',
         '../webkit/plugins/npapi/plugin_group_unittest.cc',
         '../webkit/plugins/npapi/plugin_lib_unittest.cc',
         '../webkit/plugins/npapi/plugin_list_unittest.cc',
         '../webkit/plugins/npapi/webplugin_impl_unittest.cc',
         '../webkit/quota/mock_quota_manager.cc',
@@ skipping 401 matching lines @@
                 '-buildfile',
                 '<(DEPTH)/content/shell/android/javatests/content_shell_test_apk.xml',
               ]
             }
           ],
         },
       ],
     }],
   ],
 }