[Extensions Bindings] Add native declarativeContent verification

chrome/browser/extensions/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//extensions/features/features.gni")
 import("//media/media_options.gni")
 import("//rlz/features/features.gni")
@@ skipping 115 matching lines @@
     "api/debugger/debugger_api.cc",
     "api/debugger/debugger_api.h",
     "api/debugger/debugger_api_constants.cc",
     "api/debugger/debugger_api_constants.h",
     "api/declarative_content/chrome_content_rules_registry.cc",
     "api/declarative_content/chrome_content_rules_registry.h",
     "api/declarative_content/content_action.cc",
     "api/declarative_content/content_action.h",
     "api/declarative_content/content_condition.cc",
     "api/declarative_content/content_condition.h",
-    "api/declarative_content/content_constants.cc",
-    "api/declarative_content/content_constants.h",
     "api/declarative_content/content_predicate.cc",
     "api/declarative_content/content_predicate.h",
     "api/declarative_content/content_predicate_evaluator.cc",
     "api/declarative_content/content_predicate_evaluator.h",
     "api/declarative_content/declarative_content_css_condition_tracker.cc",
     "api/declarative_content/declarative_content_css_condition_tracker.h",
     "api/declarative_content/declarative_content_is_bookmarked_condition_tracker.cc",
     "api/declarative_content/declarative_content_is_bookmarked_condition_tracker.h",
     "api/declarative_content/declarative_content_page_url_condition_tracker.cc",
     "api/declarative_content/declarative_content_page_url_condition_tracker.h",
@@ skipping 1025 matching lines @@
       "api/braille_display_private/brlapi_connection.cc",
       "api/braille_display_private/brlapi_connection.h",
       "api/braille_display_private/brlapi_keycode_map.cc",
       "api/braille_display_private/brlapi_keycode_map.h",
     ]
     deps += [ "//build/linux/libbrlapi" ]
   } else {
     sources += [ "api/braille_display_private/braille_controller_stub.cc" ]
   }
 }