Convert ProtocolHandlerRegistry to be a ProfileKeyedService.

chrome/chrome_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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 942 matching lines @@
         'browser/content_settings/tab_specific_content_settings.cc',
         'browser/content_settings/tab_specific_content_settings.h',
         'browser/cookies_tree_model.cc',
         'browser/cookies_tree_model.h',
         'browser/crash_upload_list.cc',
         'browser/crash_upload_list.h',
         'browser/crash_upload_list_win.cc',
         'browser/crash_upload_list_win.h',
         'browser/custom_handlers/protocol_handler_registry.cc',
         'browser/custom_handlers/protocol_handler_registry.h',
+        'browser/custom_handlers/protocol_handler_registry_factory.cc',
+        'browser/custom_handlers/protocol_handler_registry_factory.h',
         'browser/custom_handlers/register_protocol_handler_infobar_delegate.cc',
         'browser/custom_handlers/register_protocol_handler_infobar_delegate.h',
         'browser/custom_home_pages_table_model.cc',
         'browser/custom_home_pages_table_model.h',
         'browser/defaults.cc',
         'browser/defaults.h',
         'browser/diagnostics/diagnostics_main.cc',
         'browser/diagnostics/diagnostics_main.h',
         'browser/diagnostics/diagnostics_model.cc',
         'browser/diagnostics/diagnostics_model.h',
@@ skipping 4357 matching lines @@
         'browser/metrics/proto/study.proto',
       ],
       'variables': {
         'proto_in_dir': 'browser/metrics/proto',
         'proto_out_dir': 'chrome/browser/metrics/proto',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }