Remove all blimp network code.

blimp/net/blob_channel/helium_blob_sender_delegate.h

-// Copyright 2016 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 BLIMP_NET_BLOB_CHANNEL_HELIUM_BLOB_SENDER_DELEGATE_H_
-#define BLIMP_NET_BLOB_CHANNEL_HELIUM_BLOB_SENDER_DELEGATE_H_
-
-#include <string>
-#include <vector>
-
-#include "blimp/net/blimp_message_processor.h"
-#include "blimp/net/blimp_net_export.h"
-#include "blimp/net/blob_channel/blob_channel_receiver.h"
-#include "blimp/net/blob_channel/blob_channel_sender.h"
-#include "blimp/net/blob_channel/blob_channel_sender_impl.h"
-
-namespace blimp {
-
-// Sends blob messages as Helium messages to a BlimpMessageProcessor.
-class BLIMP_NET_EXPORT HeliumBlobSenderDelegate
-    : public BlobChannelSenderImpl::Delegate,
-      public BlimpMessageProcessor {
- public:
-  HeliumBlobSenderDelegate();
-  ~HeliumBlobSenderDelegate() override;
-
-  // Sets the message processor to which blob messages will be sent.
-  void set_outgoing_message_processor(
-      std::unique_ptr<BlimpMessageProcessor> processor) {
-    outgoing_processor_ = std::move(processor);
-  }
-
-  // BlobChannelSenderImpl::Delegate implementation.
-  void DeliverBlob(const BlobId& id, BlobDataPtr data) override;
-
- private:
-  // BlimpMessageProcessor implementation.
-  void ProcessMessage(std::unique_ptr<BlimpMessage> message,
-                      const net::CompletionCallback& callback) override;
-
-  std::unique_ptr<BlimpMessageProcessor> outgoing_processor_;
-
-  DISALLOW_COPY_AND_ASSIGN(HeliumBlobSenderDelegate);
-};
-
-}  // namespace blimp
-
-#endif  // BLIMP_NET_BLOB_CHANNEL_HELIUM_BLOB_SENDER_DELEGATE_H_