[Clean up] Move VariationsHttpHeaderProvider into a subdirectory.

components/variations.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.
 
 {
   'targets': [
     {
       # GN version: //components/variations
       'target_name': 'variations',
       'type': 'static_library',
@@ skipping 44 matching lines @@
       'includes': [ '../build/protoc.gypi' ],
       'conditions': [
         ['OS == "android"', {
           'dependencies': [
             'variations_jni_headers',
           ],
         }],
       ],
     },
     {
-      # GN version: //components/variations_http_provider
+      # GN version: //components/variations/net/variations_http_provider
       'target_name': 'variations_http_provider',
       'type': 'static_library',
       'include_dirs': [
         '..',
       ],
       'dependencies': [
         '../base/base.gyp:base',
         'components.gyp:google_core_browser',
         'variations',
       ],
       'sources': [
-        'variations/variations_http_header_provider.cc',
-        'variations/variations_http_header_provider.h',
+        'variations/net/variations_http_header_provider.cc',
+        'variations/net/variations_http_header_provider.h',
       ],
     },
   ],
   'conditions': [
     ['OS=="android"', {
       'targets': [
         {
           # GN version: //components/variations/android:variations_java
           'target_name': 'variations_java',
           'type': 'none',
@@ skipping 14 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'variations',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
     }],
   ]
 }