Refactor VariationsHttpHeaderProvider.

components/suggestions.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/suggestions
       'target_name': 'suggestions',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         '../net/net.gyp:net',
         '../ui/gfx/gfx.gyp:gfx',
         '../url/url.gyp:url_lib',
         'components.gyp:data_use_measurement_core',
         'components.gyp:keyed_service_core',
         'components.gyp:pref_registry',
         'components.gyp:variations',
-        'components.gyp:variations_http_provider',
+        'components.gyp:variations_net',
       ],
       'sources': [
         'suggestions/blacklist_store.cc',
         'suggestions/blacklist_store.h',
         'suggestions/image_encoder.h',
         'suggestions/image_fetcher.h',
         'suggestions/image_fetcher_delegate.h',
         'suggestions/image_manager.cc',
         'suggestions/image_manager.h',
         'suggestions/proto/suggestions.proto',
@@ skipping 18 matching lines @@
           ]
         }, { # 'OS != "ios"'
           'sources': [
             'suggestions/image_encoder.cc',
           ]
         }
       ]]
     },
   ],
 }