Add a public content/ interface for intents. Use it.

content/content_browser.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.
 
 {
   'dependencies': [
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:net',
     '../net/net.gyp:http_server',
     '../ppapi/ppapi_internal.gyp:ppapi_proxy',
@@ skipping 12 matching lines @@
   'include_dirs': [
     '..',
     '<(INTERMEDIATE_DIR)',
   ],
   'sources': [
     'public/browser/browser_main_parts.h',
     'public/browser/browser_thread.h',
     'public/browser/content_browser_client.h',
     'public/browser/content_ipc_logging.h',
     'public/browser/download_manager_delegate.h',
+    'public/browser/intents_host.h',
     'public/browser/native_web_keyboard_event.h',
     'public/browser/navigation_types.h',
     'public/browser/notification_details.h',
     'public/browser/notification_observer.h',
     'public/browser/notification_registrar.cc',
     'public/browser/notification_registrar.h',
     'public/browser/notification_service.h',
     'public/browser/notification_source.h',
     'public/browser/notification_types.h',
     'public/browser/plugin_data_remover.h',
@@ skipping 232 matching lines @@
     'browser/in_process_webkit/indexed_db_transaction_callbacks.cc',
     'browser/in_process_webkit/indexed_db_transaction_callbacks.h',
     'browser/in_process_webkit/session_storage_namespace.cc',
     'browser/in_process_webkit/session_storage_namespace.h',
     'browser/in_process_webkit/webkit_context.cc',
     'browser/in_process_webkit/webkit_context.h',
     'browser/in_process_webkit/webkit_thread.cc',
     'browser/in_process_webkit/webkit_thread.h',
     'browser/intents/intent_injector.cc',
     'browser/intents/intent_injector.h',
+    'browser/intents/intents_host_impl.cc',
+    'browser/intents/intents_host_impl.h',
     'browser/javascript_dialogs.h',
     'browser/load_from_memory_cache_details.cc',
     'browser/load_from_memory_cache_details.h',
     'browser/load_notification_details.h',
     'browser/mach_broker_mac.cc',
     'browser/mach_broker_mac.h',
     'browser/mime_registry_message_filter.cc',
     'browser/mime_registry_message_filter.h',
     'browser/net/browser_online_state_observer.cc',
     'browser/net/browser_online_state_observer.h',
@@ skipping 498 matching lines @@
         'browser/renderer_host/java/java_bridge_dispatcher_host_manager.h',
         'browser/renderer_host/java/java_bridge_dispatcher_host.cc',
         'browser/renderer_host/java/java_bridge_dispatcher_host.h',
         'browser/renderer_host/java/java_method.cc',
         'browser/renderer_host/java/java_method.h',
       ],
     }],
   ],
 }