[ABANDONED] Use new Websocket SendBlob IPC from renderer.

content/child/websocket_bridge.h

Index: content/child/websocket_bridge.h
diff --git a/content/child/websocket_bridge.h b/content/child/websocket_bridge.h
index ab5e3dca0194a4e84660f230330ed1985cbcc25c..4e3226bce7c4cc27792d1365812af75bf78d2824 100644
--- a/content/child/websocket_bridge.h
+++ b/content/child/websocket_bridge.h
@@ -39,6 +39,7 @@ class WebSocketBridge : public blink::WebSocketHandle {
             WebSocketHandle::MessageType type,
             const char* data,
             size_t size) override;
+  void sendBlob(const blink::WebString& uuid, uint64_t expected_size) override;
   void flowControl(int64_t quota) override;
   void close(unsigned short code, const blink::WebString& reason) override;
 
@@ -56,6 +57,7 @@ class WebSocketBridge : public blink::WebSocketHandle {
   void DidStartOpeningHandshake(const WebSocketHandshakeRequest& request);
   void DidFinishOpeningHandshake(const WebSocketHandshakeResponse& response);
   void DidFail(const std::string& message);
+  void DidCompleteSendingBlob();
   void DidReceiveData(bool fin,
                       WebSocketMessageType type,
                       const std::vector<char>& data);