Make Service own ServiceContext.

services/shell/tests/connect/connect_test_class_app.cc

Index: services/shell/tests/connect/connect_test_class_app.cc
diff --git a/services/shell/tests/connect/connect_test_class_app.cc b/services/shell/tests/connect/connect_test_class_app.cc
index 2cf08dd43a7822653e39a5c993b098d068733800..7b12052c49cd0062316483ff84bd11a28f00722e 100644
--- a/services/shell/tests/connect/connect_test_class_app.cc
+++ b/services/shell/tests/connect/connect_test_class_app.cc
@@ -31,9 +31,7 @@ class ConnectTestClassApp
 
  private:
   // shell::Service:
-  void OnStart(Connector* connector, const Identity& identity,
-               uint32_t id) override {
-    connector_ = connector;
+  void OnStart(const Identity& identity) override {
     identity_ = identity;
   }
   bool OnConnect(Connection* connection) override {
@@ -79,7 +77,6 @@ class ConnectTestClassApp
       base::MessageLoop::current()->QuitWhenIdle();
   }
 
-  Connector* connector_ = nullptr;
   Identity identity_;
   std::set<Connection*> inbound_connections_;
   mojo::BindingSet<test::mojom::ConnectTestService> bindings_;