Add allocator interface for use by cdm_adapter

media/cdm/cdm_adapter.h

Index: media/cdm/cdm_adapter.h
diff --git a/media/cdm/cdm_adapter.h b/media/cdm/cdm_adapter.h
index 091d77595bd77f09baa946b357555d399cce7f4d..a3b4a47d045e774c40328b9f972360402f573c73 100644
--- a/media/cdm/cdm_adapter.h
+++ b/media/cdm/cdm_adapter.h
@@ -31,6 +31,7 @@
 namespace media {
 
 class AudioFramesImpl;
+class CdmBufferAllocator;
 class CdmWrapper;
 
 class MEDIA_EXPORT CdmAdapter : public MediaKeys,
@@ -51,7 +52,8 @@ class MEDIA_EXPORT CdmAdapter : public MediaKeys,
       const LegacySessionErrorCB& legacy_session_error_cb,
       const SessionKeysChangeCB& session_keys_change_cb,
       const SessionExpirationUpdateCB& session_expiration_update_cb,
-      const CdmCreatedCB& cdm_created_cb);
+      const CdmCreatedCB& cdm_created_cb,
+      CdmBufferAllocator* allocator);
 
   // MediaKeys implementation.
   void SetServerCertificate(const std::vector<uint8_t>& certificate,
@@ -148,7 +150,8 @@ class MEDIA_EXPORT CdmAdapter : public MediaKeys,
              const SessionClosedCB& session_closed_cb,
              const LegacySessionErrorCB& legacy_session_error_cb,
              const SessionKeysChangeCB& session_keys_change_cb,
-             const SessionExpirationUpdateCB& session_expiration_update_cb);
+             const SessionExpirationUpdateCB& session_expiration_update_cb,
+             CdmBufferAllocator* allocator);
   ~CdmAdapter() final;
 
   // Load the CDM using |cdm_path| and initialize it. |promise| is resolved if
@@ -204,6 +207,8 @@ class MEDIA_EXPORT CdmAdapter : public MediaKeys,
   int audio_samples_per_second_;
   ChannelLayout audio_channel_layout_;
 
+  CdmBufferAllocator* allocator_;
+
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   // NOTE: Weak pointers must be invalidated before all other member variables.