memory-infra: Finish moving memory_infra from TracingController

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 977d87a566ec04e003f288de6b234c69f07f4cbe..0f2c738fd1802b16f3c1ada4beeb455ed0c8108a 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -67,6 +67,7 @@
 #include "mojo/public/cpp/system/platform_handle.h"
 #include "services/device/public/cpp/power_monitor/power_monitor_broadcast_source.h"
 #include "services/device/public/interfaces/constants.mojom.h"
+#include "services/resource_coordinator/public/cpp/memory/memory_dump_manager_delegate_impl.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/interface_factory.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
@@ -505,6 +506,12 @@ void ChildThreadImpl::Init(const Options& options) {
     channel_->AddFilter(new tracing::ChildTraceMessageFilter(
         ChildProcess::current()->io_task_runner()));
     channel_->AddFilter(new ChildMemoryMessageFilter());
+
+    auto delegate =
+        base::MakeUnique<memory_instrumentation::MemoryDumpManagerDelegateImpl>(
+            GetRemoteInterfaces());
+    base::trace_event::MemoryDumpManager::GetInstance()->Initialize(
+        std::move(delegate));
   }
 
   // In single process mode we may already have a power monitor,