Remove the chrome include in extensions\DEPS by creating a test data directory for extensions.

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 74 matching lines @@
         'browser/chromeos/login/mock_login_status_consumer.cc',
         'browser/chromeos/login/mock_login_status_consumer.h',
         'browser/chromeos/login/mock_login_utils.cc',
         'browser/chromeos/login/mock_login_utils.h',
         'browser/chromeos/login/mock_url_fetchers.cc',
         'browser/chromeos/login/mock_url_fetchers.h',
         'browser/chromeos/login/mock_user_image_manager.cc',
         'browser/chromeos/login/mock_user_image_manager.h',
         'browser/chromeos/login/mock_user_manager.cc',
         'browser/chromeos/login/mock_user_manager.h',
-        'browser/chromeos/net/mock_connectivity_state_helper.cc',
-        'browser/chromeos/net/mock_connectivity_state_helper.h',
+        'browser/chromeos/net/mock_connectivity_state_helper.cc',
+        'browser/chromeos/net/mock_connectivity_state_helper.h',
         'browser/chromeos/policy/device_policy_builder.cc',
         'browser/chromeos/policy/device_policy_builder.h',
         'browser/chromeos/settings/device_settings_test_helper.cc',
         'browser/chromeos/settings/device_settings_test_helper.h',
         'browser/chromeos/settings/mock_owner_key_util.cc',
         'browser/chromeos/settings/mock_owner_key_util.h',
         'browser/chromeos/system/mock_statistics_provider.cc',
         'browser/chromeos/system/mock_statistics_provider.h',
         # The only thing used from browser is Browser::Type.
         'browser/download/download_test_file_activity_observer.cc',
@@ skipping 1340 matching lines @@
         'browser/ui/website_settings/website_settings_unittest.cc',
         'browser/ui/webui/fileicon_source_unittest.cc',
         'browser/ui/webui/history_ui_unittest.cc',
         'browser/ui/webui/ntp/android/partner_bookmarks_shim_unittest.cc',
         'browser/ui/webui/ntp/suggestions_combiner_unittest.cc',
         'browser/ui/webui/options/language_options_handler_unittest.cc',
         'browser/ui/webui/options/pepper_flash_content_settings_utils_unittest.cc',
         'browser/ui/webui/performance_monitor/performance_monitor_ui_util_unittest.cc',
         'browser/ui/webui/print_preview/print_preview_ui_unittest.cc',
         'browser/ui/webui/signin/login_ui_service_unittest.cc',
-        'browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc',
+        'browser/ui/webui/signin/profile_signin_confirmation_dialog_unittest.cc',
         'browser/ui/webui/sync_internals_ui_unittest.cc',
         'browser/ui/webui/sync_setup_handler_unittest.cc',
         'browser/ui/webui/theme_source_unittest.cc',
         'browser/ui/webui/web_dialog_web_contents_delegate_unittest.cc',
         'browser/ui/webui/web_ui_unittest.cc',
         'browser/ui/window_sizer/window_sizer_ash_unittest.cc',
         'browser/ui/window_sizer/window_sizer_common_unittest.cc',
         'browser/ui/window_sizer/window_sizer_unittest.cc',
         'browser/ui/zoom/zoom_controller_unittest.cc',
         'browser/chrome_to_mobile_service_unittest.cc',
@@ skipping 344 matching lines @@
         ['disable_nacl==1', {
           'sources!':[
             'browser/nacl_host/nacl_validation_cache_unittest.cc',
             'browser/nacl_host/pnacl_file_host_unittest.cc',
             'nacl/nacl_ipc_adapter_unittest.cc',
             'nacl/nacl_validation_query_unittest.cc',
           ],
         }],
         ['enable_extensions==0', {
           'sources/': [
+            ['exclude', '^../extensions/'],
             ['exclude', '^browser/extensions/activity_database_unittest.cc'],
             ['exclude', '^browser/extensions/activity_log_unittest.cc'],
             ['exclude', '^browser/extensions/api/'],
             ['exclude', '^browser/sync/glue/chrome_extensions_activity_monitor_unittest.cc'],
             ['exclude', '^common/extensions/api/'],
           ],
           'sources!':[
             'browser/extensions/extension_context_menu_model_unittest.cc',
             'browser/extensions/extension_ui_unittest.cc',
             'browser/extensions/permissions_updater_unittest.cc',
@@ skipping 591 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }