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

content/shell/browser/shell_devtools_frontend.cc

 // Copyright 2013 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 "content/shell/browser/shell_devtools_frontend.h"
 
 #include <stddef.h>
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
@@ skipping 31 matching lines @@
  public:
   ResponseWriter(base::WeakPtr<ShellDevToolsFrontend> shell_devtools_,
                  int stream_id);
   ~ResponseWriter() override;
 
   // URLFetcherResponseWriter overrides:
   int Initialize(const net::CompletionCallback& callback) override;
   int Write(net::IOBuffer* buffer,
             int num_bytes,
             const net::CompletionCallback& callback) override;
-  int Finish(const net::CompletionCallback& callback) override;
+  int Finish(int net_error, const net::CompletionCallback& callback) override;
 
  private:
   base::WeakPtr<ShellDevToolsFrontend> shell_devtools_;
   int stream_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ResponseWriter);
 };
 
 ResponseWriter::ResponseWriter(
     base::WeakPtr<ShellDevToolsFrontend> shell_devtools,
@@ skipping 20 matching lines @@
   base::StringValue* chunkValue = new base::StringValue(chunk);
 
   content::BrowserThread::PostTask(
       content::BrowserThread::UI, FROM_HERE,
       base::Bind(&ShellDevToolsFrontend::CallClientFunction,
                  shell_devtools_, "DevToolsAPI.streamWrite",
                  base::Owned(id), base::Owned(chunkValue), nullptr));
   return num_bytes;
 }
 
-int ResponseWriter::Finish(const net::CompletionCallback& callback) {
+int ResponseWriter::Finish(int net_error,
+                           const net::CompletionCallback& callback) {
   return net::OK;
 }
 
 static GURL GetFrontendURL() {
   int port = ShellDevToolsManagerDelegate::GetHttpHandlerPort();
   return GURL(
       base::StringPrintf("http://127.0.0.1:%d/devtools/inspector.html", port));
 }
 
 }  // namespace
@@ skipping 265 matching lines @@
   CallClientFunction("DevToolsAPI.embedderMessageAck",
                      &id_value, arg, nullptr);
 }
 
 void ShellDevToolsFrontend::AgentHostClosed(
     DevToolsAgentHost* agent_host, bool replaced) {
   frontend_shell_->Close();
 }
 
 }  // namespace content