Add IPC plumbing code for Quota API

content/content_common.gypi

 # Copyright (c) 2011 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': 'content_common',
       'type': '<(library)',
       'dependencies': [
@@ skipping 132 matching lines @@
         'common/pepper_messages.h',
         'common/plugin_carbon_interpose_constants_mac.cc',
         'common/plugin_carbon_interpose_constants_mac.h',
         'common/plugin_messages.h',
         'common/process_watcher.h',
         'common/process_watcher_mac.cc',
         'common/process_watcher_posix.cc',
         'common/process_watcher_win.cc',
         'common/property_bag.cc',
         'common/property_bag.h',
+        'common/quota_messages.h',
+        'common/quota_dispatcher.cc',
+        'common/quota_dispatcher.h',
         'common/renderer_preferences.cc',
         'common/renderer_preferences.h',
         'common/resource_dispatcher.cc',
         'common/resource_dispatcher.h',
         'common/resource_messages.h',
         'common/resource_response.cc',
         'common/resource_response.h',
         'common/sandbox_init_wrapper.h',
         'common/sandbox_init_wrapper_linux.cc',
         'common/sandbox_init_wrapper_mac.cc',
@@ skipping 60 matching lines @@
         }],
         ['toolkit_views==1', {
           'sources': [
             'common/native_web_keyboard_event_views.cc',
           ],
         }],
       ],
     },
   ],
 }