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

content/shell/browser/shell_devtools_frontend.cc

Index: content/shell/browser/shell_devtools_frontend.cc
diff --git a/content/shell/browser/shell_devtools_frontend.cc b/content/shell/browser/shell_devtools_frontend.cc
index 968a2427c51b474138e9cacb4a61ca63bb324bb6..6a81d71c7957a13b3bef481d59302ee1e837e3e4 100644
--- a/content/shell/browser/shell_devtools_frontend.cc
+++ b/content/shell/browser/shell_devtools_frontend.cc
@@ -49,7 +49,7 @@ class ResponseWriter : public net::URLFetcherResponseWriter {
   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_;
@@ -90,7 +90,8 @@ int ResponseWriter::Write(net::IOBuffer* buffer,
   return num_bytes;
 }
 
-int ResponseWriter::Finish(const net::CompletionCallback& callback) {
+int ResponseWriter::Finish(int net_error,
+                           const net::CompletionCallback& callback) {
   return net::OK;
 }