Add support for reading blobs when using the network service.

content/browser/loader/test_url_loader_client.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 CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
 #define CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_
 
 #include <stdint.h>
 #include <vector>
 
@@ skipping 43 matching lines @@
     return has_received_cached_metadata_;
   }
   bool has_received_completion() const { return has_received_completion_; }
   const ResourceResponseHead& response_head() const { return response_head_; }
   const base::Optional<net::SSLInfo>& ssl_info() const { return ssl_info_; }
   const net::RedirectInfo& redirect_info() const { return redirect_info_; }
   const std::string& cached_metadata() const {
     return cached_metadata_;
   }
   mojo::DataPipeConsumerHandle response_body() { return response_body_.get(); }
+  mojo::ScopedDataPipeConsumerHandle response_body_release() {
+    return std::move(response_body_);
+  }
   const ResourceRequestCompletionStatus& completion_status() const {
     return completion_status_;
   }
   int64_t download_data_length() const { return download_data_length_; }
   int64_t encoded_download_data_length() const {
     return encoded_download_data_length_;
   }
   int64_t body_transfer_size() const { return body_transfer_size_; }
   int64_t current_upload_position() const { return current_upload_position_; }
   int64_t total_upload_size() const { return total_upload_size_; }
@@ skipping 41 matching lines @@
   int64_t body_transfer_size_ = 0;
   int64_t current_upload_position_ = 0;
   int64_t total_upload_size_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_TEST_URL_LOADER_CLIENT_H_