Control invalidations network channel from TiclInvalidationService

sync/notifier/non_blocking_invalidator.h

 // 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.
 //
 // An implementation of SyncNotifier that wraps InvalidationNotifier
 // on its own thread.
 
 #ifndef SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_
 #define SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "jingle/notifier/base/notifier_options.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/util/weak_handle.h"
 #include "sync/notifier/invalidation_handler.h"
 #include "sync/notifier/invalidation_state_tracker.h"
 #include "sync/notifier/invalidator.h"
 #include "sync/notifier/invalidator_registrar.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace syncer {
+class SyncNetworkChannel;
+
+// Callback type for function that creates SyncNetworkChannel. This function
+// gets passed into NonBlockingInvalidator constructor.
+typedef base::Callback<scoped_ptr<SyncNetworkChannel>(void)>
+    NetworkChannelCreator;
 
 class SYNC_EXPORT_PRIVATE NonBlockingInvalidator
     : public Invalidator,
       // InvalidationHandler to "observe" our Core via WeakHandle.
       public InvalidationHandler {
  public:
   // |invalidation_state_tracker| must be initialized.
   NonBlockingInvalidator(
-      const notifier::NotifierOptions& notifier_options,
+      NetworkChannelCreator network_channel_creator,
       const std::string& invalidator_client_id,
       const UnackedInvalidationsMap& saved_invalidations,
       const std::string& invalidation_bootstrap_data,
       const WeakHandle<InvalidationStateTracker>&
           invalidation_state_tracker,
-      const std::string& client_info);
+      const std::string& client_info,
+      const scoped_refptr<net::URLRequestContextGetter>&
+          request_context_getter);
 
   virtual ~NonBlockingInvalidator();
 
   // Invalidator implementation.
   virtual void RegisterHandler(InvalidationHandler* handler) OVERRIDE;
   virtual void UpdateRegisteredIds(InvalidationHandler* handler,
                                    const ObjectIdSet& ids) OVERRIDE;
   virtual void UnregisterHandler(InvalidationHandler* handler) OVERRIDE;
   virtual InvalidatorState GetInvalidatorState() const OVERRIDE;
   virtual void UpdateCredentials(
       const std::string& email, const std::string& token) OVERRIDE;
 
   // InvalidationHandler implementation.
   virtual void OnInvalidatorStateChange(InvalidatorState state) OVERRIDE;
   virtual void OnIncomingInvalidation(
       const ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
 
+  // Static functions to construct callback that creates network channel for
+  // SyncSystemResources. The goal is to pass network channel to invalidator at
+  // the same time not exposing channel specific parameters to invalidator and
+  // channel implementation to client of invalidator.
+  static NetworkChannelCreator MakePushClientChannelCreator(
+      const notifier::NotifierOptions& notifier_options);
+  static NetworkChannelCreator MakeGCMNetworkChannelCreator();
  private:
+  struct InitializeOptions;
   class Core;
 
   InvalidatorRegistrar registrar_;
 
   // The real guts of NonBlockingInvalidator, which allows this class to live
   // completely on the parent thread.
   scoped_refptr<Core> core_;
   scoped_refptr<base::SingleThreadTaskRunner> parent_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
 
   base::WeakPtrFactory<NonBlockingInvalidator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NonBlockingInvalidator);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_NOTIFIER_NON_BLOCKING_INVALIDATOR_H_