Move //mojo/services tracing & catalog to //services

mojo/services/catalog/manifest_provider.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 MOJO_SERVICES_CATALOG_MANIFEST_PROVIDER_H_
-#define MOJO_SERVICES_CATALOG_MANIFEST_PROVIDER_H_
-
-#include <string>
-
-#include "base/strings/string_piece.h"
-
-namespace catalog {
-
-// An interface which can be implemented by a catalog embedder to override
-// manifest fetching behavior.
-class ManifestProvider {
- public:
-  virtual ~ManifestProvider() {}
-
-  // Retrieves the raw contents of the manifest for application named |name|.
-  // Returns true if |name| is known and |*manifest_contents| is populated.
-  // returns false otherwise.
-  virtual bool GetApplicationManifest(const base::StringPiece& name,
-                                      std::string* manifest_contents) = 0;
-};
-
-}  // namespace catalog
-
-#endif  // MOJO_SERVICES_CATALOG_MANIFEST_PROVIDER_H_