Re-reland: Add MemoryCoordinator

content/browser/renderer_host/render_process_host_impl.cc

Index: content/browser/renderer_host/render_process_host_impl.cc
diff --git a/content/browser/renderer_host/render_process_host_impl.cc b/content/browser/renderer_host/render_process_host_impl.cc
index 20a1d6c45d1f46df209c24893e6eb21bb34f661e..8434a285017e9d89c4136b1f13d99b45ca54c4c4 100644
--- a/content/browser/renderer_host/render_process_host_impl.cc
+++ b/content/browser/renderer_host/render_process_host_impl.cc
@@ -44,6 +44,8 @@
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
+#include "components/memory_coordinator/browser/memory_coordinator.h"
+#include "components/memory_coordinator/common/memory_coordinator_features.h"
 #include "components/scheduler/common/scheduler_switches.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "components/webmessaging/broadcast_channel_provider.h"
@@ -450,6 +452,13 @@ std::string UintVectorToString(const std::vector<unsigned>& vector) {
   return str;
 }
 
+void CreateMemoryCoordinatorHandle(
+    int render_process_id,
+    memory_coordinator::mojom::MemoryCoordinatorHandleRequest request) {
+  BrowserMainLoop::GetInstance()->memory_coordinator()->CreateHandle(
+      render_process_id, std::move(request));
+}
+
 }  // namespace
 
 RendererMainThreadFactoryFunction g_renderer_main_thread_factory = NULL;
@@ -1099,6 +1108,11 @@ void RenderProcessHostImpl::RegisterMojoInterfaces() {
   GetInterfaceRegistry()->AddInterface(
       base::Bind(&DeviceOrientationAbsoluteHost::Create), io_task_runner);
 
+  if (memory_coordinator::IsEnabled()) {
+    GetInterfaceRegistry()->AddInterface(
+        base::Bind(&CreateMemoryCoordinatorHandle, GetID()));
+  }
+
 #if defined(OS_ANDROID)
   ServiceRegistrarAndroid::RegisterProcessHostServices(
       mojo_child_connection_->service_registry_android());