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

chrome/browser/devtools/devtools_ui_bindings.cc

Index: chrome/browser/devtools/devtools_ui_bindings.cc
diff --git a/chrome/browser/devtools/devtools_ui_bindings.cc b/chrome/browser/devtools/devtools_ui_bindings.cc
index fd3f0dd9223737448c8a11a3282c3041fd5ad212..3aacbe953785b51de01ab9fd6b703dbe7937ffbb 100644
--- a/chrome/browser/devtools/devtools_ui_bindings.cc
+++ b/chrome/browser/devtools/devtools_ui_bindings.cc
@@ -249,7 +249,7 @@ 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<DevToolsUIBindings> bindings_;
@@ -293,7 +293,8 @@ 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;
 }