Make URLFetcherFileWriter::Finish() skip closing file when there is an error

third_party/libaddressinput/chromium/chrome_metadata_source.cc

 // 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.
 
 #include "third_party/libaddressinput/chromium/chrome_metadata_source.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
@@ skipping 22 matching lines @@
     return net::OK;
   }
 
   virtual int Write(net::IOBuffer* buffer,
                     int num_bytes,
                     const net::CompletionCallback& callback) override {
     data_->append(buffer->data(), num_bytes);
     return num_bytes;
   }
 
-  virtual int Finish(const net::CompletionCallback& callback) override {
+  virtual int Finish(int net_error,
+                     const net::CompletionCallback& callback) override {
     return net::OK;
   }
 
  private:
   std::string* data_;  // weak reference.
 
   DISALLOW_COPY_AND_ASSIGN(UnownedStringWriter);
 };
 
 }  // namespace
@@ skipping 49 matching lines @@
 
   Request* request = new Request(key, std::move(fetcher), downloaded);
   request->fetcher->SaveResponseWithWriter(
       std::unique_ptr<net::URLFetcherResponseWriter>(
           new UnownedStringWriter(&request->data)));
   requests_[request->fetcher.get()] = request;
   request->fetcher->Start();
 }
 
 }  // namespace autofill