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

Source/modules/presentation/PresentationSession.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 PresentationSession_h
 #define PresentationSession_h
 
 #include "core/events/EventTarget.h"
 #include "core/fileapi/Blob.h"
 #include "core/fileapi/FileError.h"
@@ skipping 31 matching lines @@
 
     const String id() const { return m_id; }
     const WTF::AtomicString& state() const;
 
     void send(const String& message, ExceptionState&);
     void send(PassRefPtr<DOMArrayBuffer>, ExceptionState&);
     void send(PassRefPtr<DOMArrayBufferView>, ExceptionState&);
     void send(Blob*, ExceptionState&);
     void close();
 
+    String binaryType() const;
+    void setBinaryType(const String&);
+
     DEFINE_ATTRIBUTE_EVENT_LISTENER(message);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange);
 
     // Returns true if and only if the WebPresentationSessionClient represents this session.
     bool matches(WebPresentationSessionClient*) const;
 
     // 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 didReceiveBinaryMessage(const uint8_t* data, size_t length);
 
 private:
     class BlobLoader;
 
     enum MessageType {
         MessageTypeText,
         MessageTypeArrayBuffer,
         MessageTypeBlob,
     };
 
+    enum BinaryType {
+        BinaryTypeBlob,
+        BinaryTypeArrayBuffer
+    };
+
     struct Message {
         Message(const String& text)
             : type(MessageTypeText)
             , text(text) { }
 
         Message(PassRefPtr<DOMArrayBuffer> arrayBuffer)
             : type(MessageTypeArrayBuffer)
             , arrayBuffer(arrayBuffer) { }
 
         Message(PassRefPtr<BlobDataHandle> blobDataHandle)
@@ skipping 15 matching lines @@
     void didFinishLoadingBlob(PassRefPtr<DOMArrayBuffer>);
     void didFailLoadingBlob(FileError::ErrorCode);
 
     String m_id;
     String m_url;
     WebPresentationSessionState m_state;
 
     // For Blob data handling.
     Member<BlobLoader> m_blobLoader;
     Deque<OwnPtr<Message>> m_messages;
+
+    BinaryType m_binaryType;
 };
 
 } // namespace blink
 
 #endif // PresentationSession_h