media: Support creation and SetCdm() for mojo based CDM.

media/mojo/services/mojo_cdm_factory_service.h

+// Copyright 2014 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 MEDIA_MOJO_SERVICES_MOJO_CDM_FACTORY_SERVICE_H_
+#define MEDIA_MOJO_SERVICES_MOJO_CDM_FACTORY_SERVICE_H_
+
+#include "base/macros.h"
+#include "media/base/media_export.h"
+#include "media/mojo/interfaces/content_decryption_module_factory.mojom.h"
+
+namespace media {
+
+class MojoCdmServiceContext;
+
+class MEDIA_EXPORT MojoCdmFactoryService
+    : public mojo::ContentDecryptionModuleFactory {
+ public:
+  MojoCdmFactoryService(
+      MojoCdmServiceContext* context,
+      mojo::InterfaceRequest<mojo::ContentDecryptionModuleFactory> request);
+  ~MojoCdmFactoryService() final;
+
+  // mojo::InterfaceImpl<mojo::ContentDecryptionModuleFactory> implementation.
+  void Create(
+      const mojo::String& key_system,
+      const mojo::String& security_origin,
+      int32_t cdm_id,
+      mojo::InterfaceRequest<mojo::ContentDecryptionModule> request) final;
+
+ private:
+  mojo::Binding<mojo::ContentDecryptionModuleFactory> binding_;
+
+  MojoCdmServiceContext* context_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoCdmFactoryService);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_MOJO_SERVICES_MOJO_CDM_FACTORY_SERVICE_H_