memory-infra: Start disentangling tracing from memory-infra

content/child/child_thread_impl.cc

 // Copyright (c) 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.
 
 #include "content/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 14 matching lines @@
 #include "base/process/process_handle.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_local.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/timer/elapsed_timer.h"
 #include "base/trace_event/memory_dump_manager.h"
+#include "base/trace_event/memory_tracing_frontend.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "components/tracing/child/child_trace_message_filter.h"
 #include "content/child/child_histogram_message_filter.h"
 #include "content/child/child_process.h"
 #include "content/child/child_resource_message_filter.h"
 #include "content/child/fileapi/file_system_dispatcher.h"
 #include "content/child/fileapi/webfilesystem_impl.h"
 #include "content/child/memory/child_memory_message_filter.h"
 #include "content/child/notifications/notification_dispatcher.h"
@@ skipping 451 matching lines @@
         ChildProcess::current()->io_task_runner()));
     channel_->AddFilter(new ChildMemoryMessageFilter());
 
     if (service_manager_connection_) {
       memory_instrumentation::MemoryDumpManagerDelegateImpl::Config config(
           GetConnector(), mojom::kBrowserServiceName);
       auto delegate = base::MakeUnique<
           memory_instrumentation::MemoryDumpManagerDelegateImpl>(config);
       base::trace_event::MemoryDumpManager::GetInstance()->Initialize(
           std::move(delegate));
+      base::trace_event::MemoryTracingFrontend::Initialize(
+          base::trace_event::MemoryDumpManager::GetInstance());
     }
   }
 
   // In single process mode we may already have a power monitor,
   // also for some edge cases where there is no ServiceManagerConnection, we do
   // not create the power monitor.
   if (!base::PowerMonitor::Get() && service_manager_connection_) {
     std::unique_ptr<service_manager::Connection> device_connection =
         service_manager_connection_->GetConnector()->Connect(
             device::mojom::kServiceName);
@@ skipping 360 matching lines @@
   connected_to_browser_ = true;
   child_info_ = local_info;
   browser_info_ = remote_info;
 }
 
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content