Privatize StrongBinding lifetime management

extensions/browser/mojo/keep_alive_impl.cc

Index: extensions/browser/mojo/keep_alive_impl.cc
diff --git a/extensions/browser/mojo/keep_alive_impl.cc b/extensions/browser/mojo/keep_alive_impl.cc
index 8f175822132f96cf29c581c85e7c8677ae7f0a17..3d40c14d2637686c5f5535dc6a71c66083908540 100644
--- a/extensions/browser/mojo/keep_alive_impl.cc
+++ b/extensions/browser/mojo/keep_alive_impl.cc
@@ -15,13 +15,14 @@ namespace extensions {
 // static
 void KeepAliveImpl::Create(content::BrowserContext* context,
                            const Extension* extension,
-                           mojo::InterfaceRequest<KeepAlive> request) {
+                           KeepAliveRequest request) {
+  // Owns itself.
   new KeepAliveImpl(context, extension, std::move(request));
 }
 
 KeepAliveImpl::KeepAliveImpl(content::BrowserContext* context,
                              const Extension* extension,
-                             mojo::InterfaceRequest<KeepAlive> request)
+                             KeepAliveRequest request)
     : context_(context),
       extension_(extension),
       extension_registry_observer_(this),
@@ -48,6 +49,7 @@ void KeepAliveImpl::OnShutdown(ExtensionRegistry* registry) {
 
 void KeepAliveImpl::OnDisconnected() {
   ProcessManager::Get(context_)->DecrementLazyKeepaliveCount(extension_);
+  delete this;
 }
 
 }  // namespace extensions