Make Service own ServiceContext.

media/mojo/services/mojo_media_application.cc

Index: media/mojo/services/mojo_media_application.cc
diff --git a/media/mojo/services/mojo_media_application.cc b/media/mojo/services/mojo_media_application.cc
index 3fd872df42c084231abf1f579e1576342e6aed9b..492ca707591a97eb6f6c4f8e4e5359e55934db9f 100644
--- a/media/mojo/services/mojo_media_application.cc
+++ b/media/mojo/services/mojo_media_application.cc
@@ -19,7 +19,6 @@ MojoMediaApplication::MojoMediaApplication(
     std::unique_ptr<MojoMediaClient> mojo_media_client,
     const base::Closure& quit_closure)
     : mojo_media_client_(std::move(mojo_media_client)),
-      connector_(nullptr),
       media_log_(new MediaLog()),
       ref_factory_(quit_closure) {
   DCHECK(mojo_media_client_);
@@ -27,10 +26,7 @@ MojoMediaApplication::MojoMediaApplication(
 
 MojoMediaApplication::~MojoMediaApplication() {}
 
-void MojoMediaApplication::OnStart(shell::Connector* connector,
-                                   const shell::Identity& identity,
-                                   uint32_t /* id */) {
-  connector_ = connector;
+void MojoMediaApplication::OnStart(const shell::Identity& identity) {
   mojo_media_client_->Initialize();
 }