Adds a new class HttpCache::Writers for multiple cache transactions reading from the network.

net/http/http_transaction_test_util.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 NET_HTTP_HTTP_TRANSACTION_TEST_UTIL_H_
 #define NET_HTTP_HTTP_TRANSACTION_TEST_UTIL_H_
 
 #include "net/http/http_transaction.h"
 
 #include <stdint.h>
@@ skipping 65 matching lines @@
   base::Time response_time;
   const char* data;
   int test_mode;
   MockTransactionHandler handler;
   MockTransactionReadHandler read_handler;
   scoped_refptr<X509Certificate> cert;
   CertStatus cert_status;
   int ssl_connection_status;
   // Value returned by MockNetworkTransaction::Start (potentially
   // asynchronously if |!(test_mode & TEST_MODE_SYNC_NET_START)|.)
-  Error return_code;
+  Error start_return_code;
+  // Value returned by MockNetworkTransaction::Read (potentially
+  // asynchronously if |!(test_mode & TEST_MODE_SYNC_NET_START)|.)
+  Error read_return_code;
 };
 
 extern const MockTransaction kSimpleGET_Transaction;
 extern const MockTransaction kSimplePOST_Transaction;
 extern const MockTransaction kTypicalGET_Transaction;
 extern const MockTransaction kETagGET_Transaction;
 extern const MockTransaction kRangeGET_Transaction;
 
 // returns the mock transaction for the given URL
 const MockTransaction* FindMockTransaction(const GURL& url);
@@ skipping 137 matching lines @@
   void SetBeforeHeadersSentCallback(
       const BeforeHeadersSentCallback& callback) override;
 
   int ResumeNetworkStart() override;
 
   void GetConnectionAttempts(ConnectionAttempts* out) const override;
 
   CreateHelper* websocket_handshake_stream_create_helper() {
     return websocket_handshake_stream_create_helper_;
   }
+
   RequestPriority priority() const { return priority_; }
   const HttpRequestInfo* request() const { return request_; }
 
   // Bogus value that will be returned by GetTotalReceivedBytes() if the
   // MockNetworkTransaction was started.
   static const int64_t kTotalReceivedBytes;
   // Bogus value that will be returned by GetTotalSentBytes() if the
   // MockNetworkTransaction was started.
   static const int64_t kTotalSentBytes;
 
@@ skipping 97 matching lines @@
 
 //-----------------------------------------------------------------------------
 // helpers
 
 // read the transaction completely
 int ReadTransaction(HttpTransaction* trans, std::string* result);
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_TEST_UTIL_H_