[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/driver/model_association_manager.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 "components/sync/driver/model_association_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <functional>
 
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/trace_event/trace_event.h"
 #include "components/sync/api/sync_merge_result.h"
 #include "components/sync/base/model_type.h"
 
-using syncer::ModelTypeSet;
-
-namespace sync_driver {
+namespace syncer {
 
 namespace {
 
-static const syncer::ModelType kStartOrder[] = {
-    syncer::NIGORI,       //  Listed for completeness.
-    syncer::DEVICE_INFO,  //  Listed for completeness.
-    syncer::EXPERIMENTS,  //  Listed for completeness.
-    syncer::PROXY_TABS,   //  Listed for completeness.
+static const ModelType kStartOrder[] = {
+    NIGORI,       //  Listed for completeness.
+    DEVICE_INFO,  //  Listed for completeness.
+    EXPERIMENTS,  //  Listed for completeness.
+    PROXY_TABS,   //  Listed for completeness.
 
     // Kick off the association of the non-UI types first so they can associate
     // in parallel with the UI types.
-    syncer::PASSWORDS, syncer::AUTOFILL, syncer::AUTOFILL_PROFILE,
-    syncer::AUTOFILL_WALLET_DATA, syncer::AUTOFILL_WALLET_METADATA,
-    syncer::EXTENSION_SETTINGS, syncer::APP_SETTINGS, syncer::TYPED_URLS,
-    syncer::HISTORY_DELETE_DIRECTIVES, syncer::SYNCED_NOTIFICATIONS,
-    syncer::SYNCED_NOTIFICATION_APP_INFO,
+    PASSWORDS, AUTOFILL, AUTOFILL_PROFILE, AUTOFILL_WALLET_DATA,
+    AUTOFILL_WALLET_METADATA, EXTENSION_SETTINGS, APP_SETTINGS, TYPED_URLS,
+    HISTORY_DELETE_DIRECTIVES, SYNCED_NOTIFICATIONS,
+    SYNCED_NOTIFICATION_APP_INFO,
 
     // UI thread data types.
-    syncer::BOOKMARKS,
-    syncer::SUPERVISED_USERS,  //  Syncing supervised users on initial login
-                               //  might block creating a new supervised user,
-                               //  so we want to do it early.
-    syncer::PREFERENCES, syncer::PRIORITY_PREFERENCES, syncer::EXTENSIONS,
-    syncer::APPS, syncer::APP_LIST, syncer::ARC_PACKAGE, syncer::READING_LIST,
-    syncer::THEMES, syncer::SEARCH_ENGINES, syncer::SESSIONS,
-    syncer::APP_NOTIFICATIONS, syncer::DICTIONARY, syncer::FAVICON_IMAGES,
-    syncer::FAVICON_TRACKING, syncer::PRINTERS,
-    syncer::SUPERVISED_USER_SETTINGS, syncer::SUPERVISED_USER_SHARED_SETTINGS,
-    syncer::SUPERVISED_USER_WHITELISTS, syncer::ARTICLES,
-    syncer::WIFI_CREDENTIALS,
+    BOOKMARKS,
+    SUPERVISED_USERS,  //  Syncing supervised users on initial login
+                       //  might block creating a new supervised user,
+                       //  so we want to do it early.
+    PREFERENCES, PRIORITY_PREFERENCES, EXTENSIONS, APPS, APP_LIST, ARC_PACKAGE,
+    READING_LIST, THEMES, SEARCH_ENGINES, SESSIONS, APP_NOTIFICATIONS,
+    DICTIONARY, FAVICON_IMAGES, FAVICON_TRACKING, PRINTERS,
+    SUPERVISED_USER_SETTINGS, SUPERVISED_USER_SHARED_SETTINGS,
+    SUPERVISED_USER_WHITELISTS, ARTICLES, WIFI_CREDENTIALS,
 };
 
 static_assert(arraysize(kStartOrder) ==
-                  syncer::MODEL_TYPE_COUNT - syncer::FIRST_REAL_MODEL_TYPE,
+                  MODEL_TYPE_COUNT - FIRST_REAL_MODEL_TYPE,
               "kStartOrder must have MODEL_TYPE_COUNT - "
               "FIRST_REAL_MODEL_TYPE elements");
 
 // The amount of time we wait for association to finish. If some types haven't
 // finished association by the time, DataTypeManager is notified of the
 // unfinished types.
 const int64_t kAssociationTimeOutInSeconds = 600;
 
-syncer::DataTypeAssociationStats BuildAssociationStatsFromMergeResults(
-    const syncer::SyncMergeResult& local_merge_result,
-    const syncer::SyncMergeResult& syncer_merge_result,
+DataTypeAssociationStats BuildAssociationStatsFromMergeResults(
+    const SyncMergeResult& local_merge_result,
+    const SyncMergeResult& syncer_merge_result,
     const base::TimeDelta& association_wait_time,
     const base::TimeDelta& association_time) {
   DCHECK_EQ(local_merge_result.model_type(), syncer_merge_result.model_type());
-  syncer::DataTypeAssociationStats stats;
+  DataTypeAssociationStats stats;
   stats.had_error =
       local_merge_result.error().IsSet() || syncer_merge_result.error().IsSet();
   stats.num_local_items_before_association =
       local_merge_result.num_items_before_association();
   stats.num_sync_items_before_association =
       syncer_merge_result.num_items_before_association();
   stats.num_local_items_after_association =
       local_merge_result.num_items_after_association();
   stats.num_sync_items_after_association =
       syncer_merge_result.num_items_after_association();
@@ skipping 25 matching lines @@
       weak_ptr_factory_(this) {
   // Ensure all data type controllers are stopped.
   for (DataTypeController::TypeMap::const_iterator it = controllers_->begin();
        it != controllers_->end(); ++it) {
     DCHECK_EQ(DataTypeController::NOT_RUNNING, (*it).second->state());
   }
 }
 
 ModelAssociationManager::~ModelAssociationManager() {}
 
-void ModelAssociationManager::Initialize(syncer::ModelTypeSet desired_types) {
+void ModelAssociationManager::Initialize(ModelTypeSet desired_types) {
   // state_ can be INITIALIZED if types are reconfigured when
   // data is being downloaded, so StartAssociationAsync() is never called for
   // the first configuration.
   DCHECK_NE(ASSOCIATING, state_);
 
   // Only keep types that have controllers.
   desired_types_.Clear();
-  for (syncer::ModelTypeSet::Iterator it = desired_types.First(); it.Good();
-       it.Inc()) {
+  for (ModelTypeSet::Iterator it = desired_types.First(); it.Good(); it.Inc()) {
     if (controllers_->find(it.Get()) != controllers_->end())
       desired_types_.Put(it.Get());
   }
 
   DVLOG(1) << "ModelAssociationManager: Initializing for "
-           << syncer::ModelTypeSetToString(desired_types_);
+           << ModelTypeSetToString(desired_types_);
 
   state_ = INITIALIZED;
   notified_about_ready_for_configure_ = false;
 
   StopDisabledTypes();
   LoadEnabledTypes();
 }
 
-void ModelAssociationManager::StopDatatype(const syncer::SyncError& error,
+void ModelAssociationManager::StopDatatype(const SyncError& error,
                                            DataTypeController* dtc) {
   loaded_types_.Remove(dtc->type());
   associated_types_.Remove(dtc->type());
   associating_types_.Remove(dtc->type());
 
   if (error.IsSet() || dtc->state() != DataTypeController::NOT_RUNNING) {
     // If an error was set, the delegate must be informed of the error.
     delegate_->OnSingleDataTypeWillStop(dtc->type(), error);
     dtc->Stop();
   }
 }
 
 void ModelAssociationManager::StopDisabledTypes() {
   DVLOG(1) << "ModelAssociationManager: Stopping disabled types.";
   for (DataTypeController::TypeMap::const_iterator it = controllers_->begin();
        it != controllers_->end(); ++it) {
     DataTypeController* dtc = (*it).second.get();
     if (dtc->state() != DataTypeController::NOT_RUNNING &&
         !desired_types_.Has(dtc->type())) {
       DVLOG(1) << "ModelAssociationManager: stop " << dtc->name();
-      StopDatatype(syncer::SyncError(), dtc);
+      StopDatatype(SyncError(), dtc);
     }
   }
 }
 
 void ModelAssociationManager::LoadEnabledTypes() {
   // Load in kStartOrder.
   for (size_t i = 0; i < arraysize(kStartOrder); i++) {
-    syncer::ModelType type = kStartOrder[i];
+    ModelType type = kStartOrder[i];
     if (!desired_types_.Has(type))
       continue;
 
     DCHECK(controllers_->find(type) != controllers_->end());
     DataTypeController* dtc = controllers_->find(type)->second.get();
     if (dtc->state() == DataTypeController::NOT_RUNNING) {
       DCHECK(!loaded_types_.Has(dtc->type()));
       DCHECK(!associated_types_.Has(dtc->type()));
       dtc->LoadModels(base::Bind(&ModelAssociationManager::ModelLoadCallback,
                                  weak_ptr_factory_.GetWeakPtr()));
     }
   }
   NotifyDelegateIfReadyForConfigure();
 }
 
 void ModelAssociationManager::StartAssociationAsync(
-    const syncer::ModelTypeSet& types_to_associate) {
+    const ModelTypeSet& types_to_associate) {
   DCHECK_EQ(INITIALIZED, state_);
   DVLOG(1) << "Starting association for "
-           << syncer::ModelTypeSetToString(types_to_associate);
+           << ModelTypeSetToString(types_to_associate);
   state_ = ASSOCIATING;
 
   association_start_time_ = base::TimeTicks::Now();
 
   requested_types_ = types_to_associate;
 
   associating_types_ = types_to_associate;
   associating_types_.RetainAll(desired_types_);
   associating_types_.RemoveAll(associated_types_);
 
   // Assume success.
   configure_status_ = DataTypeManager::OK;
 
   // Done if no types to associate.
   if (associating_types_.Empty()) {
     ModelAssociationDone(INITIALIZED);
     return;
   }
 
   timer_.Start(FROM_HERE,
                base::TimeDelta::FromSeconds(kAssociationTimeOutInSeconds),
                base::Bind(&ModelAssociationManager::ModelAssociationDone,
                           weak_ptr_factory_.GetWeakPtr(), INITIALIZED));
 
   // Start association of types that are loaded in specified order.
   for (size_t i = 0; i < arraysize(kStartOrder); i++) {
-    syncer::ModelType type = kStartOrder[i];
+    ModelType type = kStartOrder[i];
     if (!associating_types_.Has(type) || !loaded_types_.Has(type))
       continue;
 
     DataTypeController* dtc = controllers_->find(type)->second.get();
     DCHECK(DataTypeController::MODEL_LOADED == dtc->state() ||
            DataTypeController::ASSOCIATING == dtc->state());
     if (dtc->state() == DataTypeController::MODEL_LOADED) {
       TRACE_EVENT_ASYNC_BEGIN1("sync", "ModelAssociation", dtc, "DataType",
                                ModelTypeToString(type));
 
       dtc->StartAssociating(base::Bind(
           &ModelAssociationManager::TypeStartCallback,
           weak_ptr_factory_.GetWeakPtr(), type, base::TimeTicks::Now()));
     }
   }
 }
 
 void ModelAssociationManager::Stop() {
   // Ignore callbacks from controllers.
   weak_ptr_factory_.InvalidateWeakPtrs();
 
   // Stop started data types.
   for (DataTypeController::TypeMap::const_iterator it = controllers_->begin();
        it != controllers_->end(); ++it) {
     DataTypeController* dtc = (*it).second.get();
     if (dtc->state() != DataTypeController::NOT_RUNNING) {
-      StopDatatype(syncer::SyncError(), dtc);
+      StopDatatype(SyncError(), dtc);
       DVLOG(1) << "ModelAssociationManager: Stopped " << dtc->name();
     }
   }
 
   desired_types_.Clear();
   loaded_types_.Clear();
   associated_types_.Clear();
 
   if (state_ == ASSOCIATING) {
     if (configure_status_ == DataTypeManager::OK)
       configure_status_ = DataTypeManager::ABORTED;
     DVLOG(1) << "ModelAssociationManager: Calling OnModelAssociationDone";
     ModelAssociationDone(IDLE);
   } else {
     DCHECK(associating_types_.Empty());
     DCHECK(requested_types_.Empty());
     state_ = IDLE;
   }
 }
 
-void ModelAssociationManager::ModelLoadCallback(
-    syncer::ModelType type,
-    const syncer::SyncError& error) {
+void ModelAssociationManager::ModelLoadCallback(ModelType type,
+                                                const SyncError& error) {
   DVLOG(1) << "ModelAssociationManager: ModelLoadCallback for "
-           << syncer::ModelTypeToString(type);
+           << ModelTypeToString(type);
 
   if (error.IsSet()) {
-    syncer::SyncMergeResult local_merge_result(type);
+    SyncMergeResult local_merge_result(type);
     local_merge_result.set_error(error);
     TypeStartCallback(type, base::TimeTicks::Now(),
                       DataTypeController::ASSOCIATION_FAILED,
-                      local_merge_result, syncer::SyncMergeResult(type));
+                      local_merge_result, SyncMergeResult(type));
     return;
   }
 
   // This happens when slow loading type is disabled by new configuration.
   if (!desired_types_.Has(type))
     return;
 
   DCHECK(!loaded_types_.Has(type));
   loaded_types_.Put(type);
   NotifyDelegateIfReadyForConfigure();
   if (associating_types_.Has(type)) {
     DataTypeController* dtc = controllers_->find(type)->second.get();
     // If initial sync was done for this datatype then
     // NotifyDelegateIfReadyForConfigure possibly already triggered model
     // association and StartAssociating was already called for this type. To
     // ensure StartAssociating is called only once only make a call if state is
     // MODEL_LOADED.
     // TODO(pavely): Add test for this scenario in DataTypeManagerImpl
     // unittests.
     if (dtc->state() == DataTypeController::MODEL_LOADED) {
       dtc->StartAssociating(base::Bind(
           &ModelAssociationManager::TypeStartCallback,
           weak_ptr_factory_.GetWeakPtr(), type, base::TimeTicks::Now()));
     }
   }
 }
 
 void ModelAssociationManager::TypeStartCallback(
-    syncer::ModelType type,
+    ModelType type,
     base::TimeTicks type_start_time,
     DataTypeController::ConfigureResult start_result,
-    const syncer::SyncMergeResult& local_merge_result,
-    const syncer::SyncMergeResult& syncer_merge_result) {
+    const SyncMergeResult& local_merge_result,
+    const SyncMergeResult& syncer_merge_result) {
   if (desired_types_.Has(type) &&
       !DataTypeController::IsSuccessfulResult(start_result)) {
     DVLOG(1) << "ModelAssociationManager: Type encountered an error.";
     desired_types_.Remove(type);
     DataTypeController* dtc = controllers_->find(type)->second.get();
     StopDatatype(local_merge_result.error(), dtc);
     NotifyDelegateIfReadyForConfigure();
 
     // Update configuration result.
     if (start_result == DataTypeController::UNRECOVERABLE_ERROR)
@@ skipping 16 matching lines @@
 
   if (state_ != ASSOCIATING)
     return;
 
   TRACE_EVENT_ASYNC_END1("sync", "ModelAssociation",
                          controllers_->find(type)->second.get(), "DataType",
                          ModelTypeToString(type));
 
   // Track the merge results if we succeeded or an association failure
   // occurred.
-  if (syncer::ProtocolTypes().Has(type)) {
+  if (ProtocolTypes().Has(type)) {
     base::TimeDelta association_wait_time =
         std::max(base::TimeDelta(), type_start_time - association_start_time_);
     base::TimeDelta association_time = base::TimeTicks::Now() - type_start_time;
-    syncer::DataTypeAssociationStats stats =
-        BuildAssociationStatsFromMergeResults(
-            local_merge_result, syncer_merge_result, association_wait_time,
-            association_time);
+    DataTypeAssociationStats stats = BuildAssociationStatsFromMergeResults(
+        local_merge_result, syncer_merge_result, association_wait_time,
+        association_time);
     delegate_->OnSingleDataTypeAssociationDone(type, stats);
   }
 
   associating_types_.Remove(type);
 
   if (associating_types_.Empty())
     ModelAssociationDone(INITIALIZED);
 }
 
 void ModelAssociationManager::ModelAssociationDone(State new_state) {
   DCHECK_NE(IDLE, state_);
 
   if (state_ == INITIALIZED) {
     // No associations are currently happening. Just reset the state.
     state_ = new_state;
     return;
   }
 
   DVLOG(1) << "Model association complete for "
-           << syncer::ModelTypeSetToString(requested_types_);
+           << ModelTypeSetToString(requested_types_);
 
   timer_.Stop();
 
   // Treat any unfinished types as having errors.
   desired_types_.RemoveAll(associating_types_);
   for (DataTypeController::TypeMap::const_iterator it = controllers_->begin();
        it != controllers_->end(); ++it) {
     DataTypeController* dtc = (*it).second.get();
     if (associating_types_.Has(dtc->type()) &&
         dtc->state() != DataTypeController::NOT_RUNNING) {
       UMA_HISTOGRAM_ENUMERATION("Sync.ConfigureFailed",
                                 ModelTypeToHistogramInt(dtc->type()),
-                                syncer::MODEL_TYPE_COUNT);
-      StopDatatype(
-          syncer::SyncError(FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
-                            "Association timed out.", dtc->type()),
-          dtc);
+                                MODEL_TYPE_COUNT);
+      StopDatatype(SyncError(FROM_HERE, SyncError::DATATYPE_ERROR,
+                             "Association timed out.", dtc->type()),
+                   dtc);
     }
   }
 
   DataTypeManager::ConfigureResult result(configure_status_, requested_types_);
 
   // Need to reset state before invoking delegate in order to avoid re-entrancy
   // issues (delegate may trigger a reconfiguration).
   associating_types_.Clear();
   requested_types_.Clear();
   state_ = new_state;
 
   delegate_->OnModelAssociationDone(result);
 }
 
 base::OneShotTimer* ModelAssociationManager::GetTimerForTesting() {
   return &timer_;
 }
 
 void ModelAssociationManager::NotifyDelegateIfReadyForConfigure() {
   if (notified_about_ready_for_configure_)
     return;
   for (const auto& type_dtc_pair : *controllers_) {
-    syncer::ModelType type = type_dtc_pair.first;
+    ModelType type = type_dtc_pair.first;
     if (!desired_types_.Has(type))
       continue;
     DataTypeController* dtc = type_dtc_pair.second.get();
     if (dtc->ShouldLoadModelBeforeConfigure() && !loaded_types_.Has(type)) {
       // At least one type is not ready.
       return;
     }
   }
 
   notified_about_ready_for_configure_ = true;
   delegate_->OnAllDataTypesReadyForConfigure();
 }
 
-}  // namespace sync_driver
+}  // namespace syncer