Move runner stuff into a runner namespace.

mojo/runner/android/ui_application_loader_android.cc

Index: mojo/runner/android/ui_application_loader_android.cc
diff --git a/mojo/runner/android/ui_application_loader_android.cc b/mojo/runner/android/ui_application_loader_android.cc
index a046d64d6e78c7c82316a8cbf8647f265183bca1..4579e80c9b5f5b5715f2c32806b29bc414d235b0 100644
--- a/mojo/runner/android/ui_application_loader_android.cc
+++ b/mojo/runner/android/ui_application_loader_android.cc
@@ -9,7 +9,7 @@
 #include "mojo/shell/application_manager.h"
 
 namespace mojo {
-namespace shell {
+namespace runner {
 
 UIApplicationLoader::UIApplicationLoader(
     scoped_ptr<ApplicationLoader> real_loader,
@@ -44,5 +44,5 @@ void UIApplicationLoader::ShutdownOnUIThread() {
   loader_.reset();
 }
 
-}  // namespace shell
+}  // namespace runner
 }  // namespace mojo