Const-ify DownloadStatusUpdaterDelegate methods.

content/browser/download/download_status_updater_unittest.cc

Index: content/browser/download/download_status_updater_unittest.cc
diff --git a/content/browser/download/download_status_updater_unittest.cc b/content/browser/download/download_status_updater_unittest.cc
index d68b384f035cefc053d730a030e008d701f84f65..1de5763d0ecf12f5934760ce328f44a92d8f99cf 100644
--- a/content/browser/download/download_status_updater_unittest.cc
+++ b/content/browser/download/download_status_updater_unittest.cc
@@ -30,19 +30,19 @@ class MockDelegate : public DownloadStatusUpdaterDelegate {
   }
 
   // Overriden from DownloadStatusUpdaterDelegate:
-  virtual bool IsDownloadProgressKnown() {
+  virtual bool IsDownloadProgressKnown() const OVERRIDE {
     return is_download_progress_known_;
   }
 
-  virtual int64 GetInProgressDownloadCount() {
+  virtual int64 GetInProgressDownloadCount() const OVERRIDE {
     return in_progress_download_count_;
   }
 
-  virtual int64 GetReceivedDownloadBytes() {
+  virtual int64 GetReceivedDownloadBytes() const OVERRIDE {
     return received_bytes_;
   }
 
-  virtual int64 GetTotalDownloadBytes() {
+  virtual int64 GetTotalDownloadBytes() const OVERRIDE {
     return total_bytes_;
   }