[OBSOLETE][DO NOT SUBMIT][DO NOT COMMIT]] Browser-side implementation of WebSocket Blob receive.

content/common/websocket_messages.h

Index: content/common/websocket_messages.h
diff --git a/content/common/websocket_messages.h b/content/common/websocket_messages.h
index 91d23e398696812a8f35571ef4198a57b1435c34..7cdfc28ac7272d892ce110b0c144afc24c361d90 100644
--- a/content/common/websocket_messages.h
+++ b/content/common/websocket_messages.h
@@ -46,6 +46,9 @@
 IPC_ENUM_TRAITS_MAX_VALUE(content::WebSocketMessageType,
                           content::WEB_SOCKET_MESSAGE_TYPE_LAST)
 
+IPC_ENUM_TRAITS_MAX_VALUE(content::WebSocketBinaryType,
+                          content::WebSocketBinaryType::LAST)
+
 IPC_STRUCT_TRAITS_BEGIN(content::WebSocketHandshakeRequest)
   IPC_STRUCT_TRAITS_MEMBER(url)
   IPC_STRUCT_TRAITS_MEMBER(headers)
@@ -90,6 +93,24 @@ IPC_MESSAGE_ROUTED2(WebSocketHostMsg_SendBlob,
                     std::string /* uuid */,
                     uint64_t /* expected_size */)
 
+// Indicate that the type for receiving Binary messages has changed. The
+// default type is WebSocketBinaryType::BLOB. In this mode the browser will
+// build Blobs from received messages and transmit them to the renderer with a
+// WebSocketMsg_BlobReceived IPC. The type can be changed to
+// WebSocketBinaryType::ARRAY_BUFFER, in which case Binary messages will be sent
+// to the renderer with WebSocketMsg_SendFrame IPCs in the same way as for Text
+// messages. Changes to the type only take effect at the start of the next
+// Binary message, so the render process has to be prepared to deal with a
+// message of the "wrong" type.
+IPC_MESSAGE_ROUTED1(WebSocketHostMsg_BinaryTypeChanged,
+                    content::WebSocketBinaryType /* new_type */);
+
+// After taking a reference to a Blob received via a WebSocketMsg_BlobReceived
+// IPC, the renderer should send this IPC to indicate that the browser no longer
+// needs to hold a reference to the Blob. There is no need to indicate which
+// Blob; they are confirmed in strict FIFO order.
+IPC_MESSAGE_ROUTED0(WebSocketHostMsg_BlobConfirmed);
+
 // WebSocket messages sent from the browser to the renderer.
 
 // Respond to an AddChannelRequest. |selected_protocol| is the sub-protocol the
@@ -133,6 +154,13 @@ IPC_MESSAGE_ROUTED1(WebSocketMsg_NotifyFailure,
 // send more messages.
 IPC_MESSAGE_ROUTED0(WebSocketMsg_BlobSendComplete);
 
+// Indicates that a complete binary message has been received and stored in a
+// Blob. The Blob does not count against the flow control quota supplied by the
+// render process.
+IPC_MESSAGE_ROUTED2(WebSocketMsg_BlobReceived,
+                    std::string /* uuid */,
+                    uint64_t /* size */);
+
 // WebSocket messages that can be sent in either direction.
 
 // Send a non-control frame to the channel.