Add mock WebBlobRegistry to TestWebKitPlatformSupport.

content/content_tests.gypi

 # Copyright (c) 2013 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': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 102 matching lines @@
       'test/frame_load_waiter.cc',
       'test/frame_load_waiter.h',
       'test/mock_google_streaming_server.cc',
       'test/mock_google_streaming_server.h',
       'test/mock_keyboard.cc',
       'test/mock_keyboard.h',
       'test/mock_keyboard_driver_win.cc',
       'test/mock_keyboard_driver_win.h',
       'test/mock_render_process.cc',
       'test/mock_render_process.h',
+      'test/mock_webblob_registry_impl.cc',
+      'test/mock_webblob_registry_impl.h',
       'test/mock_webclipboard_impl.cc',
       'test/mock_webclipboard_impl.h',
       'test/mock_webframeclient.h',
       'test/mock_weburlloader.cc',
       'test/mock_weburlloader.h',
       'test/net/url_request_abort_on_end_job.cc',
       'test/net/url_request_abort_on_end_job.h',
       'test/net/url_request_failed_job.cc',
       'test/net/url_request_failed_job.h',
       'test/net/url_request_mock_http_job.cc',
@@ skipping 1731 matching lines @@
                   'files': ['<(PRODUCT_DIR)/libnpapi_test_plugin.so'],
                 },
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }