Stop using callbacks in MemoryCoordinatorProxy

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 d7d261bcc51d19d91faab2fb098529c7d4c2e660..90c8b2e6b78d5e4722f6f13a20b5deadba62470e 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -1528,16 +1528,8 @@ void BrowserMainLoop::InitializeMemoryManagementComponent() {
   if (base::FeatureList::IsEnabled(features::kMemoryCoordinator)) {
     // Disable MemoryPressureListener when memory coordinator is enabled.
     base::MemoryPressureListener::SetNotificationsSuppressed(true);
-    // base::Unretained is safe because the lifetime of MemoryCoordinator is
-    // tied to the lifetime of the browser process.
-    base::MemoryCoordinatorProxy::GetInstance()->
-        SetGetCurrentMemoryStateCallback(base::Bind(
-            &MemoryCoordinator::GetCurrentMemoryState,
-            base::Unretained(MemoryCoordinator::GetInstance())));
-    base::MemoryCoordinatorProxy::GetInstance()->
-        SetSetCurrentMemoryStateForTestingCallback(base::Bind(
-            &MemoryCoordinator::SetCurrentMemoryStateForTesting,
-            base::Unretained(MemoryCoordinator::GetInstance())));
+    base::MemoryCoordinatorProxy::GetInstance()->Set(
+        MemoryCoordinator::GetInstance()->GetWeakPtr());
 
     if (memory_pressure_monitor_) {
       memory_pressure_monitor_->SetDispatchCallback(