Refactor http cache removing from a StoragePartition into separate class:

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 231 matching lines @@
       'browser/browsing_data/browsing_data_remover.cc',
       'browser/browsing_data/browsing_data_remover.h',
       'browser/browsing_data/browsing_data_service_worker_helper.cc',
       'browser/browsing_data/browsing_data_service_worker_helper.h',
       'browser/browsing_data/canonical_cookie_hash.cc',
       'browser/browsing_data/canonical_cookie_hash.h',
       'browser/browsing_data/cookies_tree_model.cc',
       'browser/browsing_data/cookies_tree_model.h',
       'browser/browsing_data/local_data_container.cc',
       'browser/browsing_data/local_data_container.h',
+      'browser/browsing_data/storage_partition_http_cache_data_remover.cc',
+      'browser/browsing_data/storage_partition_http_cache_data_remover.h',
       'browser/caps/generate_state_json.h',
       'browser/caps/generate_state_json.cc',
       'browser/character_encoding.cc',
       'browser/character_encoding.h',
       'browser/chrome_browser_application_mac.h',
       'browser/chrome_browser_application_mac.mm',
       'browser/chrome_browser_field_trials.cc',
       'browser/chrome_browser_field_trials.h',
       'browser/chrome_browser_main.cc',
       'browser/chrome_browser_main.h',
@@ skipping 3511 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }