Add MemoryCoordinator

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 8c90372bed2931a50d01a8404fec70de81c6e0ff..a3464fa824e6ff05dadc25095f0625bc4323b3c1 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -36,6 +36,7 @@
 #include "base/trace_event/memory_dump_manager.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
+#include "components/memory_coordinator/browser/memory_state_notifier.h"
 #include "components/tracing/browser/trace_config_file.h"
 #include "components/tracing/common/process_metrics_memory_dump_provider.h"
 #include "components/tracing/common/trace_to_console.h"
@@ -678,6 +679,11 @@ void BrowserMainLoop::PostMainMessageLoopStart() {
     DOMStorageArea::EnableAggressiveCommitDelay();
   }
 
+  if (parsed_command_line_.HasSwitch(
+          switches::kEnableMemoryCoordinator)) {
+    memory_state_notifier_.reset(new memory_coordinator::MemoryStateNotifier);
+  }
+
   // Enable memory-infra dump providers.
   InitSkiaEventTracer();
   tracing::ProcessMetricsMemoryDumpProvider::RegisterForProcess(
@@ -996,6 +1002,7 @@ void BrowserMainLoop::ShutdownThreadsAndCleanUp() {
   }
 
   memory_pressure_monitor_.reset();
+  memory_state_notifier_.reset();
 
 #if defined(OS_MACOSX)
   BrowserCompositorMac::DisableRecyclingForShutdown();