media: Add unittest for MojoRenderer{Impl|Service}

media/mojo/services/mojo_cdm_service_context.h

 // Copyright 2015 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_SERVICE_CONTEXT_H_
 #define MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_CONTEXT_H_
 
 #include <stdint.h>
 
 #include <map>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "media/mojo/services/media_mojo_export.h"
 
 namespace media {
 
 class MediaKeys;
 class MojoCdmService;
 
 // A class that creates, owns and manages all MojoCdmService instances.
-class MojoCdmServiceContext {
+class MEDIA_MOJO_EXPORT MojoCdmServiceContext {
  public:
   MojoCdmServiceContext();
   ~MojoCdmServiceContext();
 
   base::WeakPtr<MojoCdmServiceContext> GetWeakPtr();
 
   // Registers The |cdm_service| with |cdm_id|.
   void RegisterCdm(int cdm_id, MojoCdmService* cdm_service);
 
   // Unregisters the CDM. Must be called before the CDM is destroyed.
   void UnregisterCdm(int cdm_id);
 
   // Returns the CDM associated with |cdm_id|.
   scoped_refptr<MediaKeys> GetCdm(int cdm_id);
 
  private:
   // A map between CDM ID and MojoCdmService.
   std::map<int, MojoCdmService*> cdm_services_;
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<MojoCdmServiceContext> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoCdmServiceContext);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_CONTEXT_H_