Use a static catalog manifest for the standalone Mash runner

services/catalog/reader.h

Index: services/catalog/reader.h
diff --git a/services/catalog/reader.h b/services/catalog/reader.h
index f46c750bcbe2241db894cf899021f6a1e00220c8..903df01c49933bf130491093c0ba2bafd662df70 100644
--- a/services/catalog/reader.h
+++ b/services/catalog/reader.h
@@ -19,6 +19,7 @@
 namespace base {
 class SequencedWorkerPool;
 class SingleThreadTaskRunner;
+class Value;
 }
 
 namespace catalog {
@@ -33,6 +34,10 @@ class Reader {
   using CreateEntryForNameCallback =
       base::Callback<void(service_manager::mojom::ResolveResultPtr)>;
 
+  // Construct a Reader over a static manifest. This Reader never performs
+  // file I/O.
+  Reader(std::unique_ptr<base::Value> static_manifest, EntryCache* cache);
+
   Reader(base::SequencedWorkerPool* worker_pool,
          ManifestProvider* manifest_provider);
   Reader(base::SingleThreadTaskRunner* task_runner,
@@ -67,6 +72,7 @@ class Reader {
                       const CreateEntryForNameCallback& entry_created_callback,
                       std::unique_ptr<Entry> entry);
 
+  const bool using_static_catalog_ = false;
   base::FilePath system_package_dir_;
   scoped_refptr<base::TaskRunner> file_task_runner_;
   ManifestProvider* const manifest_provider_;