Add MemoryCoordinator

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 00cb65fd1c216131b234fe9320be1bd8a14efb07..30b39433249755ca242ec8e33c9db2862f7096fe 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -46,6 +46,7 @@
 #include "cc/raster/task_graph_runner.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_settings.h"
+#include "components/memory_coordinator/child/child_memory_coordinator_impl.h"
 #include "components/scheduler/child/compositor_worker_scheduler.h"
 #include "components/scheduler/child/webthread_base.h"
 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
@@ -798,10 +799,15 @@ void RenderThreadImpl::Init(
   }
 #endif
 
-  memory_pressure_listener_.reset(new base::MemoryPressureListener(
-      base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this)),
-      base::Bind(&RenderThreadImpl::OnSyncMemoryPressure,
-                 base::Unretained(this))));
+  if (command_line.HasSwitch(switches::kEnableMemoryCoordinator)) {
+    interface_registry()->AddInterface(
+        base::Bind(memory_coordinator::ChildMemoryCoordinatorImpl::Create));
+  } else {
+    memory_pressure_listener_.reset(new base::MemoryPressureListener(
+        base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this)),
+        base::Bind(&RenderThreadImpl::OnSyncMemoryPressure,
+                   base::Unretained(this))));
+  }
 
   int num_raster_threads = 0;
   std::string string_value =