38817     TracingBackend* backend = nullptr;  member
39637   auto add_backend = [this, &args](TracingBackend* backend, BackendType type) {  in Initialize()  argument
39638     if (!backend) {  in Initialize()
39647     rb.backend = backend;  in Initialize()
39659     rb.producer->Initialize(rb.backend->ConnectProducer(rb.producer_conn_args));  in Initialize()
40006       for (auto& backend : backends_) {  in SyncProducersForTesting()  local
40007         auto* producer = backend.producer.get();  in SyncProducersForTesting()
40026     for (auto& backend : backends_)  in SyncProducersForTesting()  local
40027       all_producers_connected &= backend.producer->connected_;  in SyncProducersForTesting()
40085     for (RegisteredBackend& backend : backends_) {  in UpdateDataSourcesOnAllBackends()
40087       if (!backend.producer->connected_)  in UpdateDataSourcesOnAllBackends()
40091       if (backend.producer->registered_data_sources_.test(  in UpdateDataSourcesOnAllBackends()
40098       backend.producer->service_->RegisterDataSource(rds.descriptor);  in UpdateDataSourcesOnAllBackends()
40099       backend.producer->registered_data_sources_.set(rds.static_state->index);  in UpdateDataSourcesOnAllBackends()
40224   for (RegisteredBackend& backend : backends_) {  in DestroyTracingSession()
40231     for (auto& con : backend.consumers) {  in DestroyTracingSession()
40242           std::count_if(backend.consumers.begin(), backend.consumers.end(),  in DestroyTracingSession()
40317   for (RegisteredBackend& backend : backends_) {  in SetBatchCommitsDurationForTesting()
40318     if (backend.producer && backend.producer->connected_ &&  in SetBatchCommitsDurationForTesting()
40319         backend.type == backend_type) {  in SetBatchCommitsDurationForTesting()
40320       backend.producer->service_->MaybeSharedMemoryArbiter()  in SetBatchCommitsDurationForTesting()
40328   for (RegisteredBackend& backend : backends_) {  in EnableDirectSMBPatchingForTesting()
40329     if (backend.producer && backend.producer->connected_ &&  in EnableDirectSMBPatchingForTesting()
40330         backend.type == backend_type &&  in EnableDirectSMBPatchingForTesting()
40331         !backend.producer->service_->MaybeSharedMemoryArbiter()  in EnableDirectSMBPatchingForTesting()
40342   for (RegisteredBackend& backend : backends_) {  in FindConsumer()
40343     for (auto& consumer : backend.consumers) {  in FindConsumer()
40362   RegisteredBackend& backend = backends_[backend_id];  in InitializeConsumer()  local
40367   consumer->Initialize(backend.backend->ConnectConsumer(conn_args));  in InitializeConsumer()
40372   for (RegisteredBackend& backend : backends_) {  in OnConsumerDisconnected()
40376     backend.consumers.erase(std::remove_if(backend.consumers.begin(),  in OnConsumerDisconnected()
40377                                            backend.consumers.end(), pred),  in OnConsumerDisconnected()
40378                             backend.consumers.end());  in OnConsumerDisconnected()
40388   for (RegisteredBackend& backend : backends_) {  in OnProducerDisconnected()
40389     if (backend.producer.get() != producer)  in OnProducerDisconnected()
40400     backend.producer->Initialize(  in OnProducerDisconnected()
40401         backend.backend->ConnectProducer(backend.producer_conn_args));  in OnProducerDisconnected()
40478     for (RegisteredBackend& backend : backends_) {  in CreateTracingSession()
40479       if (requested_backend_type && backend.type &&  in CreateTracingSession()
40480           backend.type != requested_backend_type) {  in CreateTracingSession()
40484       TracingBackendId backend_id = backend.id;  in CreateTracingSession()
40489       backend.consumers.emplace_back(  in CreateTracingSession()
40490           new ConsumerImpl(this, backend.type, backend.id, session_id));  in CreateTracingSession()
40494       if (!backend.type) {  in CreateTracingSession()
40510       args.backend_type = backend.type;  in CreateTracingSession()
41503 std::unique_ptr<TracingSession> Tracing::NewTrace(BackendType backend) {  in NewTrace()  argument
41505       ->CreateTracingSession(backend);  in NewTrace()