DOMStorageContextImpl that's implemented in terms of the new dom_storage classes.

content/content_browser.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.
 
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
@@ skipping 209 matching lines @@
     'browser/device_orientation/accelerometer_mac.cc',
     'browser/device_orientation/accelerometer_mac.h',
     'browser/device_orientation/data_fetcher.h',
     'browser/device_orientation/message_filter.cc',
     'browser/device_orientation/message_filter.h',
     'browser/device_orientation/orientation.h',
     'browser/device_orientation/provider.cc',
     'browser/device_orientation/provider.h',
     'browser/device_orientation/provider_impl.cc',
     'browser/device_orientation/provider_impl.h',
+    'browser/dom_storage/dom_storage_context_impl_new.cc',
+    'browser/dom_storage/dom_storage_context_impl_new.h',
     'browser/dom_storage/dom_storage_message_filter_new.cc',
     'browser/dom_storage/dom_storage_message_filter_new.h',
+    'browser/dom_storage/session_storage_namespace_impl_new.cc',
+    'browser/dom_storage/session_storage_namespace_impl_new.h',
     'browser/download/base_file.cc',
     'browser/download/base_file.h',
     'browser/download/download_buffer.cc',
     'browser/download/download_buffer.h',
     'browser/download/download_create_info.cc',
     'browser/download/download_create_info.h',
     'browser/download/download_file.h',
     'browser/download/download_file_impl.cc',
     'browser/download/download_file_impl.h',
     'browser/download/download_file_manager.cc',
@@ skipping 647 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }