[Variations] Bring variations_http_header_provider to variations component

components/infobars.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': [
     {
       'target_name': 'infobars_core',
       'type': 'static_library',
       'include_dirs': [
@@ skipping 14 matching lines @@
         'infobars/core/infobar_container.cc',
         'infobars/core/infobar_container.h',
         'infobars/core/infobar_delegate.cc',
         'infobars/core/infobar_delegate.h',
         'infobars/core/infobar_manager.cc',
         'infobars/core/infobar_manager.h',
         'infobars/core/infobars_switches.cc',
         'infobars/core/infobars_switches.h',
       ],
     },
+    {
+      'target_name': 'infobars_test_support',
+     'type': 'static_library',
+      'include_dirs': [
+        '..',
+      ],
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../skia/skia.gyp:skia',
+      ],
+      'sources': [
+        'infobars/test/infobar_test.cc',
+      ],
+    },
   ],
 }