Make DETECT_IMPORTANT_CONTENT the default Plugins content setting based

components/components.gyp

 # 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 31 matching lines @@
     'metrics.gypi',
     'navigation_metrics.gypi',
     'network_hints.gypi',
     'network_time.gypi',
     'omnibox.gypi',
     'onc.gypi',
     'os_crypt.gypi',
     'ownership.gypi',
     'packed_ct_ev_whitelist.gypi',
     'password_manager.gypi',
+    'plugins.gypi',
     'policy.gypi',
     'precache.gypi',
     'pref_registry.gypi',
     'query_parser.gypi',
     'rappor.gypi',
     'renderer_context_menu.gypi',
     'search.gypi',
     'search_engines.gypi',
     'search_provider_logos.gypi',
     'sessions.gypi',
@@ skipping 18 matching lines @@
       'includes': [
         'service_tab_launcher.gypi',
       ],
     }],
     ['OS != "ios"', {
       'includes': [
         'app_modal.gypi',
         'browsing_data.gypi',
         'cdm.gypi',
         'navigation_interception.gypi',
-        'plugins.gypi',
         'power.gypi',
         'visitedlink.gypi',
         'web_cache.gypi',
         'web_contents_delegate_android.gypi',
         'web_modal.gypi',
         'webui_generator.gypi',
       ],
     }],
     ['OS == "ios"', {
       'includes': [
@@ skipping 43 matching lines @@
         'printing.gypi',
       ],
     }],
     ['enable_plugins==1', {
       'includes': [
         'pdf.gypi',
       ],
     }],
   ],
 }