Privatize StrongBinding lifetime management

services/navigation/view_impl.h

Index: services/navigation/view_impl.h
diff --git a/services/navigation/view_impl.h b/services/navigation/view_impl.h
index 0f4199c4273785a21678e3463e7ab74c130865df..8d9c5d2316b570670b7c481cda12ec6edf2baa81 100644
--- a/services/navigation/view_impl.h
+++ b/services/navigation/view_impl.h
@@ -12,7 +12,6 @@
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/navigation/public/interfaces/view.mojom.h"
 #include "services/shell/public/cpp/interface_factory.h"
 #include "services/shell/public/cpp/service.h"
@@ -37,7 +36,6 @@ class ViewImpl : public mojom::View,
   ViewImpl(std::unique_ptr<shell::Connector> connector,
            const std::string& client_user_id,
            mojom::ViewClientPtr client,
-           mojom::ViewRequest request,
            std::unique_ptr<shell::ServiceContextRef> ref);
   ~ViewImpl() override;
 
@@ -92,7 +90,6 @@ class ViewImpl : public mojom::View,
   const views::Widget* GetWidget() const override;
 
   std::unique_ptr<shell::Connector> connector_;
-  mojo::StrongBinding<mojom::View> binding_;
   mojom::ViewClientPtr client_;
   std::unique_ptr<shell::ServiceContextRef> ref_;