[PresentationAPI] on-session-message handler for binary messages (Blink side).

Source/modules/presentation/PresentationSession.h

Index: Source/modules/presentation/PresentationSession.h
diff --git a/Source/modules/presentation/PresentationSession.h b/Source/modules/presentation/PresentationSession.h
index 410fa047d9016fb8ce3394c5eaca0d3f918fc874..acc9699afe27951b3508a2b32a628b40165ac54e 100644
--- a/Source/modules/presentation/PresentationSession.h
+++ b/Source/modules/presentation/PresentationSession.h
@@ -59,8 +59,10 @@ public:
     // Notifies the session about its state change.
     void didChangeState(WebPresentationSessionState);
 
-    // Notifies the session about new text message.
+    // Notifies the session about new message.
     void didReceiveTextMessage(const String& message);
+    void didReceiveArrayBufferMessage(const uint8_t* data, size_t length);
+    void didReceiveBlobMessage(const uint8_t* data, size_t length);
 
 private:
     class BlobLoader;