Remove URLRequestJob::GetResponseCode implementations outside of net/.

storage/browser/fileapi/file_writer_delegate_unittest.cc

Index: storage/browser/fileapi/file_writer_delegate_unittest.cc
diff --git a/storage/browser/fileapi/file_writer_delegate_unittest.cc b/storage/browser/fileapi/file_writer_delegate_unittest.cc
index 39deadf92d76965abb0825877dd242fc39c5825c..9733b4b4612949f39ab85eb0965370a018928218 100644
--- a/storage/browser/fileapi/file_writer_delegate_unittest.cc
+++ b/storage/browser/fileapi/file_writer_delegate_unittest.cc
@@ -201,8 +201,6 @@ class FileWriterDelegateTestJob : public net::URLRequestJob {
     return buf_size;
   }
 
-  int GetResponseCode() const override { return 200; }
-
   void GetResponseInfo(net::HttpResponseInfo* info) override {
     const char kStatus[] = "HTTP/1.1 200 OK\0";
     const size_t kStatusLen = arraysize(kStatus);