Privatize StrongBinding lifetime management

extensions/renderer/mojo/keep_alive_client_unittest.cc

Index: extensions/renderer/mojo/keep_alive_client_unittest.cc
diff --git a/extensions/renderer/mojo/keep_alive_client_unittest.cc b/extensions/renderer/mojo/keep_alive_client_unittest.cc
index ca88535f299e2e524b953110a37131f9ad194b27..cfdcac40d175878b37ff92913717058c29c10998 100644
--- a/extensions/renderer/mojo/keep_alive_client_unittest.cc
+++ b/extensions/renderer/mojo/keep_alive_client_unittest.cc
@@ -20,23 +20,21 @@ namespace {
 // destruction.
 class TestKeepAlive : public KeepAlive {
  public:
-  TestKeepAlive(const base::Closure& on_destruction,
-                mojo::InterfaceRequest<KeepAlive> keep_alive)
-      : on_destruction_(on_destruction),
-        binding_(this, std::move(keep_alive)) {}
+  explicit TestKeepAlive(const base::Closure& on_destruction)
+      : on_destruction_(on_destruction) {}
 
   ~TestKeepAlive() override { on_destruction_.Run(); }
 
   static void Create(const base::Closure& on_creation,
                      const base::Closure& on_destruction,
-                     mojo::InterfaceRequest<KeepAlive> keep_alive) {
-    new TestKeepAlive(on_destruction, std::move(keep_alive));
+                     KeepAliveRequest keep_alive) {
+    mojo::MakeStrongBinding(base::MakeUnique<TestKeepAlive>(on_destruction),
+                            std::move(keep_alive));
     on_creation.Run();
   }
 
  private:
   const base::Closure on_destruction_;
-  mojo::StrongBinding<KeepAlive> binding_;
 };
 
 }  // namespace