Make the download's response headers available in the DownloadItem

content/public/test/fake_download_item.cc

Index: content/public/test/fake_download_item.cc
diff --git a/content/public/test/fake_download_item.cc b/content/public/test/fake_download_item.cc
index 7e9fe03d9a1060c56acb05f0eddc043e8d5cb93f..ce0f6e3852324a221cf089a1f52b31622121c187 100644
--- a/content/public/test/fake_download_item.cc
+++ b/content/public/test/fake_download_item.cc
@@ -126,6 +126,14 @@ DownloadItem::DownloadState FakeDownloadItem::GetState() const {
   return download_state_;
 }
 
+void FakeDownloadItem::SetResponseCode(int response_code) {
+  response_code_ = response_code;
+}
+
+int FakeDownloadItem::GetResponseCode() const {
+  return response_code_;
+}
+
 void FakeDownloadItem::SetMimeType(const std::string& mime_type) {
   mime_type_ = mime_type;
 }