Add ExtensionsTestBrowserContext class for test.

chrome/chrome_tests_unit.gypi

 # Copyright 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 264 matching lines @@
         'test/logging/win/log_file_printer.cc',
         'test/logging/win/log_file_printer.h',
         'test/logging/win/log_file_reader.cc',
         'test/logging/win/log_file_reader.h',
         'test/logging/win/mof_data_parser.cc',
         'test/logging/win/mof_data_parser.h',
         'test/logging/win/test_log_collector.cc',
         'test/logging/win/test_log_collector.h',
         'test/ppapi/ppapi_test.cc',
         'test/ppapi/ppapi_test.h',
+        '../extensions/common/extensions_test_browser_context.cc',
+        '../extensions/common/extensions_test_browser_context.h',

[Yoyo Zhou, 2014/07/15 19:27:30]

I think it'd be better to put these in extensions.gyp's extensions_test_support
and add that in the dependencies here.

[limasdf, 2014/07/16 16:10:19]

Done.

         '../ui/gfx/image/image_unittest_util.cc',
         '../ui/gfx/image/image_unittest_util.h',
       ],
       'conditions': [
         ['OS!="ios"', {
           'dependencies': [
             'common/extensions/api/api.gyp:chrome_api',
             'plugin',
             'renderer',
             'utility',
@@ skipping 2611 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }