[Extensions] Make value_builder.h usable outside of tests.

extensions/extensions.gypi

 # Copyright 2015 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': {
     'extensions_common_constants_sources': [
       'common/constants.cc',
       'common/constants.h',
     ],
@@ skipping 192 matching lines @@
       'common/switches.cc',
       'common/switches.h',
       'common/update_manifest.cc',
       'common/update_manifest.h',
       'common/url_pattern.cc',
       'common/url_pattern.h',
       'common/url_pattern_set.cc',
       'common/url_pattern_set.h',
       'common/user_script.cc',
       'common/user_script.h',
+      'common/value_builder.cc',
+      'common/value_builder.h',
       'common/value_counter.cc',
       'common/value_counter.h',
       'common/view_type.cc',
       'common/view_type.h',
     ],
     'extensions_common_sources_nacl': [
       'common/manifest_handlers/nacl_modules_handler.cc',
       'common/manifest_handlers/nacl_modules_handler.h',
     ],
     'extensions_common_sources_openssl': [
@@ skipping 785 matching lines @@
       'browser/test_management_policy.cc',
       'browser/test_management_policy.h',
       'browser/test_runtime_api_delegate.cc',
       'browser/test_runtime_api_delegate.h',
       'common/extension_builder.cc',
       'common/extension_builder.h',
       'common/manifest_test.cc',
       'common/manifest_test.h',
       'common/test_util.cc',
       'common/test_util.h',
-      'common/value_builder.cc',
-      'common/value_builder.h',
       'renderer/test_extensions_renderer_client.cc',
       'renderer/test_extensions_renderer_client.h',
       'test/extension_test_message_listener.cc',
       'test/extension_test_message_listener.h',
       'test/result_catcher.cc',
       'test/result_catcher.h',
       'test/test_content_utility_client.cc',
       'test/test_content_utility_client.h',
       'test/test_extensions_client.cc',
       'test/test_extensions_client.h',
       'test/test_permission_message_provider.cc',
       'test/test_permission_message_provider.h',
     ],
   },
 }