Extract some stuff into PackageManager

mandoline/app/core_services_initialization.cc

Index: mandoline/app/core_services_initialization.cc
diff --git a/mandoline/app/core_services_initialization.cc b/mandoline/app/core_services_initialization.cc
index 17ee8f0017904a6ae6aa71865029e3b6a057deeb..b56343dfe01b54ddbcab1adf089b8775b3e7fb9b 100644
--- a/mandoline/app/core_services_initialization.cc
+++ b/mandoline/app/core_services_initialization.cc
@@ -4,6 +4,7 @@
 
 #include "mandoline/app/core_services_initialization.h"
 
+#include "mojo/package_manager/package_manager_impl.h"
 #include "mojo/runner/context.h"
 
 namespace mandoline {
@@ -11,7 +12,8 @@ namespace mandoline {
 void InitCoreServicesForContext(mojo::runner::Context* context) {
   // TODO(erg): We should probably handle this differently; these could be
   // autogenerated from package manifests.
-  mojo::shell::ApplicationManager* manager = context->application_manager();
+  mojo::package_manager::PackageManagerImpl* manager =
+      context->package_manager();
   manager->RegisterApplicationPackageAlias(
       GURL("mojo:clipboard"), GURL("mojo:core_services"), "Core");
   manager->RegisterApplicationPackageAlias(GURL("mojo:filesystem"),