Move shell service to toplevel shell namespace

media/mojo/services/main.cc

Index: media/mojo/services/main.cc
diff --git a/media/mojo/services/main.cc b/media/mojo/services/main.cc
index 990bf454050cbc2845eb1682b6f78f907a629b10..524dba66b224d0e4d38bff060ea7f06164e19764 100644
--- a/media/mojo/services/main.cc
+++ b/media/mojo/services/main.cc
@@ -13,10 +13,10 @@
 MojoResult MojoMain(MojoHandle mojo_handle) {
   // Enable logging.
   base::AtExitManager at_exit;
-  mojo::ApplicationRunner::InitBaseCommandLine();
+  shell::ApplicationRunner::InitBaseCommandLine();
   mojo::InitLogging();
 
-  mojo::ApplicationRunner runner(new media::MojoMediaApplication(
+  shell::ApplicationRunner runner(new media::MojoMediaApplication(
       base::WrapUnique(new media::TestMojoMediaClient())));
   return runner.Run(mojo_handle, false /* init_base */);
 }