Remove URLRequestJob::GetResponseCode implementations from some tests.

content/public/test/test_download_request_handler.cc

Index: content/public/test/test_download_request_handler.cc
diff --git a/content/public/test/test_download_request_handler.cc b/content/public/test/test_download_request_handler.cc
index c0f9525704855764b509283be42160281791ce74..bfa1fe073d431a58687d2d23472c200d832b782e 100644
--- a/content/public/test/test_download_request_handler.cc
+++ b/content/public/test/test_download_request_handler.cc
@@ -108,7 +108,6 @@ class TestDownloadRequestHandler::PartialResponseJob
   void GetResponseInfo(net::HttpResponseInfo* response_info) override;
   int64_t GetTotalReceivedBytes() const override;
   bool GetMimeType(std::string* mime_type) const override;
-  int GetResponseCode() const override;
   int ReadRawData(net::IOBuffer* buf, int buf_size) override;
 
  private:
@@ -274,11 +273,6 @@ bool TestDownloadRequestHandler::PartialResponseJob::GetMimeType(
   return !parameters_->content_type.empty();
 }
 
-int TestDownloadRequestHandler::PartialResponseJob::GetResponseCode() const {
-  return response_info_.headers.get() ? response_info_.headers->response_code()
-                                      : 0;
-}
-
 int TestDownloadRequestHandler::PartialResponseJob::ReadRawData(
     net::IOBuffer* buf,
     int buf_size) {