PermissionServiceContext using mojo::StrongBindingSet.

content/browser/permissions/permission_service_context.cc

Index: content/browser/permissions/permission_service_context.cc
diff --git a/content/browser/permissions/permission_service_context.cc b/content/browser/permissions/permission_service_context.cc
index ec8c386b03fc91c35f53b6797c1d74e5b1e5992a..cdef03604fc5bc63a6ce43adbe09bcf819c71a4a 100644
--- a/content/browser/permissions/permission_service_context.cc
+++ b/content/browser/permissions/permission_service_context.cc
@@ -31,14 +31,7 @@ PermissionServiceContext::~PermissionServiceContext() {
 
 void PermissionServiceContext::CreateService(
     mojo::InterfaceRequest<PermissionService> request) {
-  services_.push_back(new PermissionServiceImpl(this, request.Pass()));
-}
-
-void PermissionServiceContext::ServiceHadConnectionError(
-    PermissionServiceImpl* service) {
-  auto it = std::find(services_.begin(), services_.end(), service);
-  DCHECK(it != services_.end());
-  services_.erase(it);
+  services_.EmplaceService(std::move(request), this);
 }
 
 void PermissionServiceContext::RenderFrameHostChanged(