USS SyncContextProxy / data type activation refactoring

sync/sessions/model_type_registry.cc

 // Copyright 2014 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.
 
 #include "sync/sessions/model_type_registry.h"
 
 #include "base/bind.h"
 #include "base/observer_list.h"
 #include "base/thread_task_runner_handle.h"
 #include "sync/engine/commit_queue.h"
 #include "sync/engine/directory_commit_contributor.h"
 #include "sync/engine/directory_update_handler.h"
 #include "sync/engine/model_type_processor.h"
 #include "sync/engine/model_type_processor_impl.h"
 #include "sync/engine/model_type_worker.h"
-#include "sync/internal_api/public/non_blocking_sync_common.h"
+#include "sync/internal_api/public/activation_context.h"
 #include "sync/sessions/directory_type_debug_info_emitter.h"
 #include "sync/util/cryptographer.h"
 
 namespace syncer {
 
 namespace {
 
 class ModelTypeProcessorProxy : public syncer_v2::ModelTypeProcessor {
  public:
   ModelTypeProcessorProxy(
@@ skipping 154 matching lines @@
     DCHECK(inserted2) << "Attempt to override existing type handler in map";
   }
 
   enabled_directory_types_ = GetRoutingInfoTypes(routing_info);
   DCHECK(Intersection(GetEnabledDirectoryTypes(),
                       GetEnabledNonBlockingTypes()).Empty());
 }
 
 void ModelTypeRegistry::ConnectSyncTypeToWorker(
     ModelType type,
-    const syncer_v2::DataTypeState& data_type_state,
-    const syncer_v2::UpdateResponseDataList& saved_pending_updates,
-    const scoped_refptr<base::SequencedTaskRunner>& type_task_runner,
-    const base::WeakPtr<syncer_v2::ModelTypeProcessor>& type_processor) {
+    scoped_ptr<syncer_v2::ActivationContext> activation_context) {
   DVLOG(1) << "Enabling an off-thread sync type: " << ModelTypeToString(type);
 
   // Initialize Worker -> Processor communication channel.
   scoped_ptr<syncer_v2::ModelTypeProcessor> processor_proxy(
-      new ModelTypeProcessorProxy(type_processor, type_task_runner));
+      new ModelTypeProcessorProxy(activation_context->type_processor,
+                                  activation_context->type_task_runner));
   scoped_ptr<Cryptographer> cryptographer_copy;
   if (encrypted_types_.Has(type))
     cryptographer_copy.reset(new Cryptographer(*cryptographer_));
 
   scoped_ptr<syncer_v2::ModelTypeWorker> worker(new syncer_v2::ModelTypeWorker(
-      type, data_type_state, saved_pending_updates, cryptographer_copy.Pass(),
+      type, activation_context->data_type_state,
+      activation_context->saved_pending_updates, cryptographer_copy.Pass(),
       nudge_handler_, processor_proxy.Pass()));
 
   // Initialize Processor -> Worker communication channel.
   scoped_ptr<syncer_v2::CommitQueue> commit_queue_proxy(new CommitQueueProxy(
       worker->AsWeakPtr(), scoped_refptr<base::SequencedTaskRunner>(
                                base::ThreadTaskRunnerHandle::Get())));
-  type_task_runner->PostTask(
+  activation_context->type_task_runner->PostTask(
       FROM_HERE, base::Bind(&syncer_v2::ModelTypeProcessor::OnConnect,
-                            type_processor, base::Passed(&commit_queue_proxy)));
+                            activation_context->type_processor,
+                            base::Passed(&commit_queue_proxy)));
 
   DCHECK(update_handler_map_.find(type) == update_handler_map_.end());
   DCHECK(commit_contributor_map_.find(type) == commit_contributor_map_.end());
 
   update_handler_map_.insert(std::make_pair(type, worker.get()));
   commit_contributor_map_.insert(std::make_pair(type, worker.get()));
 
   // The container takes ownership.
   model_type_workers_.push_back(worker.Pass());
 
@@ skipping 125 matching lines @@
   ModelTypeSet enabled_off_thread_types;
   for (ScopedVector<syncer_v2::ModelTypeWorker>::const_iterator it =
            model_type_workers_.begin();
        it != model_type_workers_.end(); ++it) {
     enabled_off_thread_types.Put((*it)->GetModelType());
   }
   return enabled_off_thread_types;
 }
 
 }  // namespace syncer