[NTP Popular Sites] Store country/version in prefs

chrome/browser/net/file_downloader.h

Index: chrome/browser/net/file_downloader.h
diff --git a/chrome/browser/net/file_downloader.h b/chrome/browser/net/file_downloader.h
index d6383188464f3af04f6a66d801c3785c61c02636..4db2b6b7e2582492f42e9eb37f2813ca11855f92 100644
--- a/chrome/browser/net/file_downloader.h
+++ b/chrome/browser/net/file_downloader.h
@@ -25,7 +25,15 @@ class GURL;
 // downloading anything.
 class FileDownloader : public net::URLFetcherDelegate {
  public:
-  typedef base::Callback<void(bool /* success */)> DownloadFinishedCallback;
+  enum Result {
+    // The file was successfully downloaded.
+    DOWNLOADED,
+    // A local file at the given path already existed and was kept.
+    EXISTS,
+    // Downloading failed.
+    FAILED
+  };
+  using DownloadFinishedCallback = base::Callback<void(Result)>;
 
   // Directly starts the download (if necessary) and runs |callback| when done.
   // If the instance is destroyed before it is finished, |callback| is not run.
@@ -36,6 +44,8 @@ class FileDownloader : public net::URLFetcherDelegate {
                  const DownloadFinishedCallback& callback);
   ~FileDownloader() override;
 
+  static bool IsSuccess(Result result) { return result != FAILED; }
+
  private:
   // net::URLFetcherDelegate implementation.
   void OnURLFetchComplete(const net::URLFetcher* source) override;