Android: Do not build any extensions code except for extensions_constants.

chrome/chrome_renderer.gypi

 # Copyright (c) 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.
 
 {
   'variables': {
     'chrome_renderer_sources': [
       'renderer/benchmarking_extension.cc',
       'renderer/benchmarking_extension.h',
       'renderer/isolated_world_ids.h',
@@ skipping 254 matching lines @@
         '../components/components.gyp:error_page_renderer',
         '../components/components.gyp:startup_metric_utils',
         '../components/components.gyp:password_manager_content_renderer',
         '../components/components.gyp:plugins_renderer',
         '../components/components.gyp:translate_content_renderer',
         '../components/components.gyp:visitedlink_renderer',
         '../components/components.gyp:web_cache_renderer',
         '../content/app/resources/content_resources.gyp:content_resources',
         '../content/app/strings/content_strings.gyp:content_strings',
         '../content/content.gyp:content_renderer',
-        '../extensions/extensions_resources.gyp:extensions_resources',
         '../media/cast/cast.gyp:cast_logging_proto',
         '../media/cast/cast.gyp:cast_net',
         '../media/cast/cast.gyp:cast_sender',
         '../net/net.gyp:net',
         '../skia/skia.gyp:skia',
         '../third_party/WebKit/public/blink.gyp:blink',
         '../third_party/icu/icu.gyp:icui18n',
         '../third_party/icu/icu.gyp:icuuc',
         '../third_party/npapi/npapi.gyp:npapi',
         '../third_party/widevine/cdm/widevine_cdm.gyp:widevine_cdm_version_h',
@@ skipping 44 matching lines @@
           ],
         }],
         ['safe_browsing==2', {
           'defines': [
             'MOBILE_SAFE_BROWSING',
           ],
         }],
         ['enable_extensions==1', {
           'dependencies': [
             '../extensions/extensions.gyp:extensions_renderer',
+            '../extensions/extensions_resources.gyp:extensions_resources',
             # TODO(hclam): See crbug.com/298380 for details.
             # We should isolate the APIs needed by the renderer.
             '<(DEPTH)/chrome/common/extensions/api/api.gyp:chrome_api',
           ],
           'sources': [
             '<@(chrome_renderer_extensions_sources)',
           ],
         }],
         ['enable_webrtc==1', {
           'sources': [
@@ skipping 52 matching lines @@
               'export_dependent_settings': [
                 '<(allocator_target)',
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }