Use a static catalog manifest for the standalone Mash runner

services/catalog/reader.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef SERVICES_CATALOG_READER_H_
 #define SERVICES_CATALOG_READER_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "services/catalog/types.h"
 #include "services/service_manager/public/interfaces/resolver.mojom.h"
 
 namespace base {
 class SequencedWorkerPool;
 class SingleThreadTaskRunner;
+class Value;
 }
 
 namespace catalog {
 
 class Entry;
 class ManifestProvider;
 
 // Responsible for loading manifests & building the Entry data structures.
 class Reader {
  public:
   using ReadManifestCallback = base::Callback<void(std::unique_ptr<Entry>)>;
   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,
          ManifestProvider* manifest_provider);
   ~Reader();
 
   // Scans the contents of |package_dir|, reading all application manifests and
   // populating |cache|. Runs |read_complete_closure| when done.
   void Read(const base::FilePath& package_dir,
             EntryCache* cache,
@@ skipping 14 matching lines @@
   void OverrideManifestPath(const std::string& service_name,
                             const base::FilePath& path);
 
  private:
   explicit Reader(ManifestProvider* manifest_provider);
 
   void OnReadManifest(EntryCache* cache,
                       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_;
   std::map<std::string, std::string> package_name_overrides_;
   std::map<std::string, base::FilePath> manifest_path_overrides_;
   base::WeakPtrFactory<Reader> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Reader);
 };
 
 }  // namespace catalog
 
 #endif  // SERVICES_CATALOG_READER_H_